<s>
is	O
a	O
1991	O
platform	O
game	O
developed	O
by	O
Sonic	B-Application
Team	O
and	O
published	O
by	O
Sega	O
for	O
the	O
Sega	B-Operating_System
Genesis/Mega	I-Operating_System
Drive	I-Operating_System
.	O
</s>
<s>
The	O
first	O
game	O
in	O
the	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
franchise	B-Application
,	O
it	O
was	O
released	O
in	O
North	O
America	O
on	O
June	O
23	O
and	O
in	O
PAL	O
regions	O
and	O
Japan	O
the	O
following	O
month	O
.	O
</s>
<s>
Players	O
control	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
,	O
who	O
can	O
run	O
at	O
supersonic	O
speeds	O
;	O
Sonic	B-Application
sets	O
out	O
on	O
a	O
quest	O
to	O
defeat	O
Dr.	O
Robotnik	O
,	O
a	O
scientist	O
who	O
has	O
imprisoned	O
animals	O
in	O
robots	O
and	O
seeks	O
the	O
powerful	O
Chaos	O
Emeralds	O
.	O
</s>
<s>
The	O
developers	O
chose	O
a	O
blue	O
hedgehog	O
designed	O
by	O
Naoto	O
Oshima	O
after	O
he	O
won	O
an	O
internal	O
character	O
design	O
contest	O
,	O
and	O
named	O
themselves	O
Sonic	B-Application
Team	O
to	O
match	O
their	O
character	O
.	O
</s>
<s>
It	O
uses	O
a	O
novel	O
technique	O
that	O
allows	O
Sonic	B-Application
's	O
sprite	O
to	O
roll	O
along	O
curved	O
scenery	O
which	O
was	O
based	O
on	O
a	O
concept	O
by	O
Oshima	O
from	O
1989	O
.	O
</s>
<s>
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
,	O
designed	O
for	O
fast	O
gameplay	O
,	O
was	O
influenced	O
by	O
games	O
by	O
Super	B-Application
Mario	I-Application
series	O
creator	O
Shigeru	O
Miyamoto	O
.	O
</s>
<s>
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
was	O
well	O
received	O
by	O
critics	O
,	O
who	O
praised	O
its	O
visuals	O
,	O
audio	O
,	O
and	O
gameplay	O
.	O
</s>
<s>
It	O
was	O
also	O
commercially	O
successful	O
,	O
becoming	O
one	O
of	O
the	O
best-selling	B-Application
video	I-Application
games	I-Application
of	I-Application
all	I-Application
time	I-Application
with	O
approximately	O
copies	O
sold	O
worldwide	O
across	O
all	O
platforms	O
;	O
it	O
established	O
the	O
Genesis	O
as	O
a	O
key	O
player	O
in	O
the	O
16-bit	B-Application
era	I-Application
and	O
allowing	O
it	O
to	O
compete	O
with	O
the	O
Super	B-Application
Nintendo	I-Application
Entertainment	I-Application
System	I-Application
.	O
</s>
<s>
It	O
has	O
been	O
ported	O
a	O
number	O
of	O
times	O
,	O
and	O
inspired	O
several	O
clones	O
,	O
a	O
successful	O
franchise	B-Application
,	O
and	O
adaptations	O
into	O
other	O
media	O
.	O
</s>
<s>
It	O
was	O
followed	O
by	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
2	I-Application
in	O
1992	O
.	O
</s>
<s>
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
is	O
a	O
2D	O
side-scrolling	O
platform	O
game	O
.	O
</s>
<s>
The	O
gameplay	O
centers	O
on	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
's	O
ability	O
to	O
run	O
at	O
high	O
speed	O
through	O
levels	O
that	O
include	O
springs	O
,	O
slopes	O
,	O
bottomless	O
pits	O
,	O
and	O
vertical	O
loops	O
.	O
</s>
<s>
Sonic	B-Application
's	O
main	O
means	O
of	O
attack	O
is	O
the	O
spin	O
attack	O
,	O
in	O
which	O
he	O
curls	O
into	O
a	O
ball	O
and	O
spins	O
his	O
body	O
,	O
damaging	O
enemies	O
and	O
certain	O
obstacles	O
upon	O
collision	O
.	O
</s>
<s>
At	O
the	O
start	O
of	O
the	O
game	O
,	O
the	O
player	O
is	O
given	O
three	O
lives	O
,	O
which	O
may	O
be	O
lost	O
if	O
Sonic	B-Application
collides	O
with	O
hazardous	O
enemies	O
or	O
objects	O
while	O
in	O
possession	O
of	O
no	O
rings	O
,	O
falls	O
to	O
the	O
bottom	O
of	O
the	O
level	O
screen	O
,	O
or	O
exceeds	O
an	O
act	O
's	O
ten-minute	O
time	O
limit	O
.	O
</s>
<s>
Signposts	O
act	O
as	O
checkpoints	O
to	O
allow	O
Sonic	B-Application
to	O
return	O
to	O
the	O
most	O
recently	O
activated	O
post	O
when	O
he	O
loses	O
a	O
life	O
.	O
</s>
<s>
Rings	O
act	O
as	O
a	O
layer	O
of	O
protection	O
against	O
hazards	O
:	O
if	O
Sonic	B-Application
holds	O
at	O
least	O
one	O
ring	O
when	O
he	O
collides	O
with	O
an	O
enemy	O
or	O
dangerous	O
obstacle	O
,	O
all	O
his	O
rings	O
will	O
scatter	O
.	O
</s>
<s>
Shields	O
and	O
temporary	O
invincibility	O
can	O
be	O
collected	O
to	O
provide	O
additional	O
layers	O
of	O
protection	O
,	O
but	O
certain	O
hazards	O
,	O
such	O
as	O
drowning	O
,	O
being	O
crushed	O
,	O
falling	O
into	O
bottomless	O
pits	O
,	O
or	O
running	O
out	O
of	O
time	O
,	O
kill	O
Sonic	B-Application
regardless	O
of	O
rings	O
or	O
other	O
protection	O
.	O
</s>
<s>
A	O
brief	O
animation	O
shows	O
Sonic	B-Application
's	O
return	O
to	O
the	O
first	O
zone	O
,	O
with	O
animals	O
liberated	O
from	O
Dr.	O
Robotnik	O
.	O
</s>
<s>
If	O
Sonic	B-Application
reaches	O
the	O
end	O
of	O
any	O
zone	O
's	O
Act	O
1	O
or	O
Act	O
2	O
while	O
holding	O
at	O
least	O
50	O
rings	O
,	O
a	O
large	O
ring	O
appears	O
through	O
which	O
he	O
can	O
jump	O
to	O
enter	O
a	O
"	O
special	O
stage	O
"	O
.	O
</s>
<s>
In	O
the	O
Special	O
Stages	O
,	O
Sonic	B-Application
is	O
continually	O
curled	O
up	O
in	O
his	O
Spin	O
Attack	O
animation	O
,	O
and	O
bounces	O
off	O
the	O
bumpers	O
and	O
walls	O
of	O
a	O
fully	O
rotating	O
maze	O
.	O
</s>
<s>
The	O
player	O
controls	O
Sonic	B-Application
,	O
who	O
aims	O
to	O
halt	O
Robotnik	O
's	O
plans	O
by	O
freeing	O
his	O
animal	O
friends	O
and	O
collecting	O
the	O
emeralds	O
himself	O
.	O
</s>
<s>
In	O
1988	O
,	O
Sega	O
of	O
Japan	O
began	O
an	O
in-house	O
competition	O
to	O
create	O
a	O
rival	O
to	O
Nintendo	O
's	O
mascot	O
Mario	B-Application
.	O
</s>
<s>
For	O
the	O
next	O
three	O
years	O
,	O
programmers	O
and	O
designers	O
at	O
Sega	O
worked	O
on	O
a	O
brand	O
character	O
to	O
rival	O
Mario	B-Application
.	O
</s>
<s>
Sega	O
's	O
president	O
Hayao	O
Nakayama	O
wanted	O
a	O
character	O
as	O
iconic	O
as	O
Mickey	B-Application
Mouse	I-Application
.	O
</s>
<s>
Development	O
emphasized	O
speed	O
,	O
so	O
Sega	O
considered	O
fast	O
creatures	O
such	O
as	O
kangaroos	B-Application
and	O
squirrels	B-Protocol
and	O
eliminated	O
designs	O
not	O
associated	O
with	O
fast	O
animals	O
.	O
</s>
<s>
One	O
idea	O
,	O
a	O
rabbit	B-Algorithm
able	O
to	O
grasp	O
objects	O
with	O
prehensile	O
ears	O
,	O
showed	O
promise	O
but	O
was	O
too	O
complex	O
for	O
the	O
Genesis	O
hardware	O
.	O
</s>
<s>
The	O
team	O
narrowed	O
its	O
search	O
to	O
animals	O
that	O
could	O
roll	O
into	O
a	O
ball	O
,	O
their	O
idea	O
for	O
an	O
attacking	O
move	O
,	O
and	O
considered	O
armadillos	B-Application
and	O
hedgehogs	O
.	O
</s>
<s>
He	O
went	O
to	O
Central	O
Park	O
and	O
asked	O
locals	O
for	O
their	O
opinions	O
on	O
them	O
,	O
and	O
Sonic	B-Application
was	O
the	O
favorite	O
.	O
</s>
<s>
Sonic	B-Application
was	O
originally	O
teal-colored	O
,	O
then	O
a	O
light	O
shade	O
of	O
blue	O
,	O
but	O
he	O
was	O
changed	O
to	O
dark	O
blue	O
so	O
he	O
would	O
stand	O
out	O
against	O
certain	O
backgrounds	O
and	O
to	O
match	O
the	O
Sega	O
logo	O
.	O
</s>
<s>
According	O
to	O
Ohshima	O
,	O
Sonic	B-Application
's	O
basic	O
design	O
was	O
created	O
by	O
combining	O
Felix	B-Application
the	I-Application
Cat	I-Application
's	O
head	O
with	O
Mickey	B-Application
Mouse	I-Application
's	O
body	O
.	O
</s>
<s>
Sonic	B-Application
's	O
spikes	O
were	O
emphasized	O
to	O
make	O
him	O
sleeker	O
,	O
and	O
he	O
was	O
given	O
the	O
ability	O
to	O
spin	O
while	O
jumping	O
(	O
so	O
attacking	O
and	O
jumping	O
could	O
be	O
controlled	O
with	O
one	O
button	O
)	O
.	O
</s>
<s>
The	O
new	O
character	O
was	O
originally	O
named	O
"	O
Mr.	O
Hedgehog	O
"	O
,	O
but	O
the	O
eight-member	O
team	O
changed	O
his	O
name	O
to	O
"	O
Sonic	B-Application
"	O
and	O
took	O
the	O
name	O
Sonic	B-Application
Team	O
.	O
</s>
<s>
Ohshima	O
said	O
that	O
"	O
Sonic	B-Application
"	O
was	O
chosen	O
because	O
it	O
represented	O
speed	O
.	O
</s>
<s>
They	O
made	O
plans	O
to	O
educate	O
Sonic	B-Application
Team	O
on	O
character	O
design	O
with	O
the	O
work	O
of	O
Will	O
Vinton	O
,	O
the	O
creator	O
of	O
the	O
California	O
Raisins	O
.	O
</s>
<s>
They	O
proposed	O
a	O
full-scale	O
recreation	O
of	O
the	O
character	O
,	O
but	O
compromised	O
with	O
Sonic	B-Application
Team	O
to	O
simply	O
make	O
design	O
changes	O
for	O
western	O
audiences	O
.	O
</s>
<s>
With	O
a	O
satisfying	O
protagonist	O
established	O
,	O
Sega	O
turned	O
to	O
the	O
programmer	O
Yuji	O
Naka	O
,	O
who	O
had	O
impressed	O
them	O
with	O
his	O
work	O
on	O
Phantasy	B-Application
Star	I-Application
and	O
the	O
Genesis	O
port	O
of	O
Ghouls	B-Application
'	I-Application
n	I-Application
Ghosts	I-Application
.	O
</s>
<s>
Naka	O
was	O
a	O
fan	O
of	O
Super	B-Application
Mario	I-Application
Bros	I-Application
.	I-Application
but	O
wanted	O
something	O
faster	O
,	O
so	O
the	O
game	O
was	O
made	O
to	O
play	O
quickly	O
,	O
which	O
was	O
where	O
he	O
focused	O
most	O
of	O
his	O
effort	O
.	O
</s>
<s>
Naka	O
explained	O
that	O
the	O
reason	O
he	O
wanted	O
a	O
fast	O
game	O
was	O
that	O
he	O
had	O
ported	O
Ghouls	B-Application
'	I-Application
n	I-Application
Ghosts	I-Application
,	O
and	O
wanted	O
to	O
work	O
on	O
its	O
movement	O
but	O
found	O
it	O
slow	O
.	O
</s>
<s>
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
was	O
developed	O
by	O
a	O
team	O
of	O
seven	O
:	O
two	O
programmers	O
,	O
two	O
sound	O
engineers	O
,	O
and	O
three	O
designers	O
,	O
although	O
it	O
began	O
with	O
just	O
Ohshima	O
and	O
Naka	O
.	O
</s>
<s>
After	O
being	O
assigned	O
a	O
project	O
with	O
the	O
code	O
name	O
"	O
Defeat	O
Mario	B-Application
"	O
,	O
Ohshima	O
and	O
Naka	O
began	O
work	O
,	O
but	O
encountered	O
problems	O
:	O
Ohshima	O
's	O
Rabbit	B-Algorithm
proved	O
hard	O
to	O
program	O
.	O
</s>
<s>
Catching	O
items	O
and	O
throwing	O
them	O
caused	O
the	O
action	B-Application
's	O
rhythm	O
to	O
break	O
.	O
</s>
<s>
Naka	O
stated	O
that	O
the	O
rabbit	B-Algorithm
was	O
not	O
suitable	O
for	O
his	O
game	O
engine	O
,	O
and	O
he	O
also	O
wanted	O
the	O
game	O
to	O
be	O
playable	O
with	O
only	O
one	O
button	O
.	O
</s>
<s>
He	O
became	O
the	O
lead	O
designer	O
due	O
to	O
his	O
greater	O
experience	O
,	O
and	O
found	O
the	O
way	O
to	O
make	O
the	O
game	O
playable	O
with	O
only	O
one	O
button	O
by	O
having	O
Sonic	B-Application
do	O
damage	O
by	O
jumping	O
.	O
</s>
<s>
Due	O
to	O
the	O
popularity	O
of	O
Mario	B-Application
,	O
Naka	O
wanted	O
Sonic	B-Application
to	O
take	O
over	O
the	O
American	O
market	O
.	O
</s>
<s>
Sonic	B-Application
's	O
default	O
speed	O
was	O
set	O
to	O
that	O
of	O
Mario	B-Application
while	O
running	O
.	O
</s>
<s>
Increasing	O
Sonic	B-Application
's	O
speed	O
caused	O
animation	O
problems	O
.	O
</s>
<s>
The	O
loop	O
running	O
was	O
implemented	O
in	O
a	O
tech	O
demo	O
by	O
Naka	O
,	O
who	O
developed	O
an	O
algorithm	O
allowing	O
a	O
sprite	O
to	O
move	O
smoothly	O
on	O
a	O
curve	O
by	O
determining	O
its	O
position	O
with	O
a	O
dot	B-General_Concept
matrix	I-General_Concept
.	O
</s>
<s>
Yasuhara	O
originally	O
intended	O
to	O
work	O
on	O
the	O
game	O
for	O
three	O
months	O
due	O
to	O
the	O
delay	O
of	O
his	O
planned	O
move	O
to	O
the	O
United	O
States	O
by	O
the	O
outbreak	O
of	O
the	O
Gulf	B-Application
War	I-Application
,	O
but	O
was	O
engrossed	O
in	O
the	O
project	O
for	O
nearly	O
a	O
year	O
.	O
</s>
<s>
In	O
designing	O
the	O
gameplay	O
,	O
Naka	O
was	O
inspired	O
by	O
Mario	B-Application
creator	O
Shigeru	O
Miyamoto	O
,	O
whose	O
games	O
he	O
had	O
enjoyed	O
playing	O
years	O
earlier	O
.	O
</s>
<s>
Admiring	O
the	O
simplicity	O
of	O
Miyamoto	O
's	O
mechanics	O
in	O
complex	O
environments	O
,	O
Naka	O
decided	O
that	O
Sonic	B-Application
would	O
be	O
controlled	O
with	O
only	O
a	O
directional	B-Device
pad	I-Device
for	O
movement	O
and	O
a	O
single	O
button	O
for	O
jumping	O
.	O
</s>
<s>
He	O
also	O
wanted	O
his	O
creation	O
to	O
be	O
more	O
action-oriented	O
than	O
the	O
Mario	B-Application
series	I-Application
;	O
while	O
playing	O
Super	O
Mario	O
Bros.	O
,	O
he	O
had	O
wondered	O
why	O
the	O
levels	O
could	O
not	O
be	O
cleared	O
more	O
quickly	O
.	O
</s>
<s>
A	O
two-player	O
mode	O
appeared	O
in	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
2	I-Application
(	O
1992	O
)	O
,	O
whereby	O
the	O
second	O
player	O
controls	O
Sonic	B-Application
's	O
sidekick	O
Miles	O
"	O
Tails	O
"	O
Prower	O
.	O
</s>
<s>
Sonic	B-Application
Team	O
also	O
intended	O
to	O
include	O
a	O
sound	O
test	O
with	O
animations	O
of	O
Sonic	B-Application
breakdancing	O
to	O
a	O
band	O
of	O
animal	O
characters	O
;	O
including	O
a	O
crocodile	O
keyboardist	O
who	O
was	O
later	O
introduced	O
into	O
the	O
series	O
as	O
Vector	O
the	O
Crocodile	O
in	O
Knuckles	B-Application
 '	I-Application
Chaotix	I-Application
in	O
1995	O
.	O
</s>
<s>
Naka	O
also	O
stated	O
that	O
the	O
team	O
was	O
trying	O
to	O
create	O
smooth	O
maps	O
,	O
and	O
that	O
implementing	O
looping	O
structures	O
was	O
a	O
challenge	O
because	O
Sonic	B-Application
would	O
break	O
through	O
them	O
instead	O
of	O
running	O
around	O
them	O
.	O
</s>
<s>
The	O
zones	O
were	O
based	O
on	O
designs	O
by	O
Naka	O
and	O
Ohshima	O
,	O
with	O
the	O
goal	O
of	O
creating	O
the	O
world	O
's	O
fastest	O
action	B-Application
game	I-Application
.	O
</s>
<s>
Sonic	B-Application
Team	O
wanted	O
the	O
level	O
to	O
portray	O
the	O
character	O
correctly	O
.	O
</s>
<s>
Its	O
checkered	O
ground	O
was	O
inspired	O
by	O
3D	O
image	O
rendering	O
from	O
computers	O
,	O
an	O
idea	O
Naka	O
obtained	O
from	O
Sega	O
developer	O
Yu	O
Suzuki	O
,	O
who	O
used	O
this	O
technique	O
with	O
Space	B-Application
Harrier	I-Application
.	O
</s>
<s>
Sega	O
director	O
Fujio	O
Minegishi	O
had	O
connections	O
to	O
the	O
music	O
industry	O
and	O
suggested	O
his	O
friend	O
Yūzō	O
Kayama	O
write	O
the	O
Sonic	B-Application
score	O
.	O
</s>
<s>
However	O
,	O
Sonic	B-Application
Team	O
did	O
not	O
think	O
Kayama	O
's	O
music	O
would	O
fit	O
,	O
and	O
so	O
commissioned	O
Masato	O
Nakamura	O
,	O
bassist	O
and	O
songwriter	O
of	O
the	O
J-pop	O
band	O
Dreams	O
Come	O
True	O
.	O
</s>
<s>
After	O
he	O
finished	O
the	O
compositions	O
,	O
they	O
were	O
digitized	O
using	O
an	O
Atari	B-Device
ST	I-Device
and	O
the	O
program	O
Notator	O
.	O
</s>
<s>
On	O
October	O
19	O
,	O
2011	O
,	O
over	O
20	O
years	O
after	O
the	O
release	O
,	O
a	O
three-disc	O
compilation	O
of	O
music	O
from	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
and	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
2	I-Application
was	O
released	O
in	O
Japan	O
.	O
</s>
<s>
At	O
the	O
show	O
,	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
was	O
believed	O
to	O
be	O
the	O
most	O
impressive	O
game	O
shown	O
,	O
and	O
won	O
the	O
CES	O
award	O
for	O
innovation	O
.	O
</s>
<s>
The	O
global	O
head	O
of	O
marketing	O
,	O
Al	O
Nilsen	O
,	O
became	O
involved	O
,	O
and	O
playtested	O
the	O
game	O
across	O
the	O
United	O
States	O
with	O
Mario	B-Application
fans	O
:	O
they	O
were	O
shown	O
Mario	B-Application
and	O
then	O
played	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
.	O
</s>
<s>
80	O
percent	O
preferred	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
,	O
and	O
the	O
game	O
was	O
shown	O
at	O
the	O
1991	O
Summer	O
Consumer	O
Electronics	O
Show	O
.	O
</s>
<s>
In	O
November	O
1991	O
,	O
Sega	O
of	O
America	O
packaged	O
it	O
with	O
American	O
Genesis	O
consoles	O
,	O
replacing	O
Altered	B-Application
Beast	I-Application
.	O
</s>
<s>
Genesis	O
owners	O
who	O
bought	O
their	O
consoles	O
before	O
the	O
switch	O
could	O
request	O
free	O
copies	O
of	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
by	O
mail	O
.	O
</s>
<s>
Sega	O
of	O
America	O
created	O
a	O
marketing	O
campaign	O
,	O
making	O
Sonic	B-Application
its	O
new	O
mascot	O
.	O
</s>
<s>
A	O
version	O
of	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
was	O
developed	O
by	O
Ancient	O
and	O
released	O
in	O
late	O
1991	O
for	O
Sega	O
's	O
8-bit	O
consoles	O
,	O
the	O
Master	O
System	O
and	O
Game	O
Gear	O
.	O
</s>
<s>
Its	O
plot	O
and	O
gameplay	O
mechanics	O
are	O
similar	O
to	O
the	O
16-bit	B-Application
version	O
,	O
though	O
some	O
level	O
themes	O
and	O
digital	O
assets	O
are	O
different	O
and	O
Chaos	O
Emeralds	O
are	O
scattered	O
throughout	O
levels	O
rather	O
than	O
special	O
stages	O
.	O
</s>
<s>
Gameplay	O
as	O
a	O
whole	O
is	O
simplified	O
;	O
the	O
level	O
design	O
is	O
flatter	O
and	O
has	O
a	O
larger	O
focus	O
on	O
exploration	O
,	O
with	O
no	O
vertical	O
loops	O
,	O
and	O
Sonic	B-Application
cannot	O
re-collect	O
his	O
rings	O
after	O
being	O
hit	O
.	O
</s>
<s>
The	O
Master	O
System	O
version	O
was	O
re-released	O
for	O
Wii	B-Operating_System
's	O
Virtual	B-Application
Console	I-Application
service	O
in	O
North	O
America	O
and	O
Europe	O
in	O
August	O
2008	O
.	O
</s>
<s>
The	O
Game	O
Gear	O
version	O
was	O
re-released	O
for	O
the	O
Nintendo	B-Operating_System
3DS	I-Operating_System
Virtual	B-Application
Console	I-Application
on	O
June	O
13	O
,	O
2013	O
,	O
and	O
included	O
as	O
an	O
unlockable	O
game	O
in	O
Sonic	B-Application
Adventure	I-Application
DX	I-Application
:	I-Application
Director	I-Application
's	I-Application
Cut	I-Application
for	O
GameCube	B-Application
and	O
Windows	O
and	O
Sonic	B-Device
Mega	I-Device
Collection	I-Device
Plus	I-Device
for	O
PlayStation	B-Device
2	I-Device
,	O
Xbox	B-Device
,	O
and	O
Windows	O
.	O
</s>
<s>
To	O
mark	O
the	O
game	O
's	O
fifteenth	O
anniversary	O
,	O
a	O
port	O
for	O
the	O
Game	B-Device
Boy	I-Device
Advance	I-Device
,	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
Genesis	I-Application
,	O
was	O
released	O
on	O
November	O
14	O
,	O
2006	O
.	O
</s>
<s>
The	O
chief	O
complaints	O
concerned	O
its	O
poor	O
conversion	O
to	O
the	O
Game	B-Device
Boy	I-Device
Advance	I-Device
,	O
resulting	O
in	O
a	O
bad	O
performance	O
and	O
poor	O
implementation	O
of	O
the	O
original	O
music	O
and	O
gameplay	O
.	O
</s>
<s>
As	O
a	O
response	O
to	O
the	O
poor	O
reception	O
and	O
claims	O
that	O
the	O
system	O
could	O
not	O
handle	O
the	O
original	O
game	O
,	O
Simon	O
"	O
Stealth	O
"	O
Thomley	O
,	O
who	O
later	O
assisted	O
with	O
the	O
development	O
of	O
the	O
2013	O
mobile	O
port	O
,	O
released	O
an	O
unofficial	O
,	O
proof-of-concept	O
version	O
of	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
for	O
the	O
system	O
.	O
</s>
<s>
A	O
remastered	O
mobile	O
port	O
was	O
released	O
on	O
iOS	B-Application
on	O
May	O
15	O
,	O
2013	O
,	O
with	O
an	O
Android	B-Application
version	O
following	O
the	O
next	O
day	O
.	O
</s>
<s>
This	O
version	O
was	O
developed	O
by	O
Christian	O
"	O
Taxman	O
"	O
Whitehead	O
and	O
Simon	B-Application
Thomley	I-Application
of	O
Headcannon	B-Application
from	O
scratch	O
using	O
the	O
Retro	B-Application
Engine	I-Application
,	O
previously	O
used	O
in	O
the	O
2011	O
remaster	O
of	O
Sonic	B-Application
CD	I-Application
.	O
</s>
<s>
The	O
iOS	B-Application
version	O
was	O
updated	O
in	O
2016	O
,	O
adding	O
compatibility	O
with	O
Apple	B-Device
TV	I-Device
.	O
</s>
<s>
A	O
Nintendo	B-Operating_System
3DS	I-Operating_System
version	O
,	O
3D	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
,	O
was	O
released	O
as	O
part	O
of	O
the	O
3D	B-Device
Classics	I-Device
line	O
in	O
2013	O
.	O
</s>
<s>
This	O
version	O
,	O
unlike	O
most	O
downloadable	O
re-releases	O
of	O
the	O
game	O
,	O
is	O
not	O
emulated	O
;	O
rather	O
,	O
the	O
code	O
was	O
restructured	O
to	O
take	O
advantage	O
of	O
the	O
3DS	B-Operating_System
system	O
's	O
stereoscopic	B-Application
3D	I-Application
graphics	O
and	O
comes	O
with	O
additional	O
enhancements	O
,	O
such	O
as	O
the	O
option	O
to	O
use	O
the	O
Spin	O
Dash	O
move	O
,	O
a	O
CRT-style	O
filter	O
,	O
and	O
the	O
option	O
to	O
start	O
from	O
any	O
level	O
.	O
</s>
<s>
With	O
its	O
sequels	O
for	O
the	O
Genesis	O
,	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
has	O
been	O
ported	O
for	O
a	O
wide	O
range	O
of	O
home	O
and	O
handheld	O
consoles	O
and	O
personal	O
computers	O
through	O
compilations	O
.	O
</s>
<s>
The	O
first	O
collection	O
it	O
appeared	O
in	O
was	O
Sonic	B-Application
Compilation	I-Application
(	O
1995	O
)	O
for	O
the	O
Genesis	O
.	O
</s>
<s>
It	O
has	O
since	O
appeared	O
in	O
Sonic	B-Application
Jam	I-Application
(	O
1997	O
)	O
for	O
the	O
Saturn	B-Device
,	O
Sonic	B-Device
Mega	I-Device
Collection	I-Device
(	O
2002	O
)	O
for	O
the	O
GameCube	B-Application
,	O
Sonic	B-Device
Mega	I-Device
Collection	I-Device
Plus	I-Device
(	O
2004	O
)	O
for	O
the	O
PlayStation	B-Device
2	I-Device
and	O
Xbox	B-Device
,	O
Sega	B-Operating_System
Genesis	I-Operating_System
Collection	O
for	O
the	O
PlayStation	B-Device
2	I-Device
and	O
PSP	B-Operating_System
,	O
Sonic	B-Application
's	I-Application
Ultimate	I-Application
Genesis	I-Application
Collection	I-Application
(	O
2009	O
)	O
for	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
and	O
PlayStation	B-Operating_System
3	I-Operating_System
,	O
Sonic	B-Device
Classic	I-Device
Collection	I-Device
(	O
2010	O
)	O
for	O
the	O
Nintendo	B-Device
DS	I-Device
,	O
Oculus	O
Arcade	O
for	O
the	O
Oculus	B-Device
Rift	I-Device
,	O
and	O
Sega	B-Operating_System
Genesis	I-Operating_System
Classics	O
(	O
2018	O
)	O
for	O
Microsoft	B-Application
Windows	I-Application
,	O
PlayStation	B-Operating_System
4	I-Operating_System
,	O
Xbox	B-Device
One	I-Device
and	O
Nintendo	B-Application
Switch	I-Application
.	O
</s>
<s>
The	O
2013	O
remaster	O
was	O
included	O
in	O
the	O
2022	O
compilation	O
Sonic	B-Device
Origins	I-Device
.	O
</s>
<s>
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
has	O
been	O
available	O
for	O
all	O
three	O
major	O
seventh-generation	B-Application
video	I-Application
game	I-Application
consoles	I-Application
.	O
</s>
<s>
It	O
was	O
part	O
of	O
the	B-Operating_System
Wii	I-Operating_System
Virtual	B-Application
Console	I-Application
at	O
the	O
service	O
's	O
2006	O
introduction	O
,	O
and	O
was	O
released	O
for	O
the	O
Xbox	B-Device
Live	I-Device
Arcade	I-Device
and	O
PlayStation	B-Device
Network	I-Device
shortly	O
afterwards	O
.	O
</s>
<s>
The	O
game	O
was	O
released	O
for	O
the	O
iPod	B-Operating_System
Classic	I-Operating_System
,	O
iPod	B-Operating_System
video	O
,	O
and	O
video-capable	O
iPod	B-Device
Nano	I-Device
models	O
in	O
2007	O
and	O
for	O
Apple	O
's	O
iOS	B-Application
in	O
April	O
2009	O
.	O
</s>
<s>
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
became	O
available	O
on	O
GameTap	B-Operating_System
in	O
September	O
2009	O
.	O
</s>
<s>
In	O
October	O
2010	O
,	O
it	O
was	O
released	O
on	O
Windows	O
via	O
Steam	B-Application
.	O
</s>
<s>
The	O
game	O
was	O
ported	O
to	O
Android	B-Application
and	O
released	O
in	O
December	O
2012	O
.	O
</s>
<s>
Additionally	O
,	O
it	O
is	O
an	O
unlockable	O
reward	O
in	O
the	O
console	O
versions	O
of	O
Sonic	B-Application
Generations	I-Application
.	O
</s>
<s>
The	O
2013	O
remaster	O
was	O
made	O
available	O
on	O
the	O
Sega	B-Application
Forever	I-Application
service	O
on	O
iOS	B-Application
and	O
Android	B-Application
in	O
June	O
2017	O
.	O
</s>
<s>
A	O
port	O
for	O
Nintendo	B-Application
Switch	I-Application
was	O
released	O
on	O
September	O
20	O
,	O
2018	O
as	O
part	O
of	O
the	O
Sega	O
Ages	O
line	O
of	O
rereleases	O
.	O
</s>
<s>
It	O
adds	O
features	O
including	O
the	O
ability	O
to	O
use	O
moves	O
from	O
Sonic	B-Application
2	I-Application
and	O
Sonic	B-Application
Mania	I-Application
,	O
a	O
challenge	O
mode	O
,	O
a	O
time	O
attack	O
for	O
the	O
first	O
stage	O
,	O
and	O
features	O
from	O
the	O
3DS	B-Operating_System
rereleases	O
of	O
the	O
game	O
and	O
its	O
sequel	O
.	O
</s>
<s>
U.S.	O
Gold	O
acquired	O
the	O
rights	O
to	O
make	O
a	O
version	O
of	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
for	O
the	O
Amiga	B-Device
,	O
ZX	B-Operating_System
Spectrum	I-Operating_System
,	O
Commodore	O
64	O
,	O
Amstrad	B-Device
CPC	I-Device
and	O
Atari	B-Device
ST	I-Device
personal	O
computers	O
,	O
but	O
these	O
went	O
unreleased	O
.	O
</s>
<s>
An	O
enhanced	O
port	O
for	O
the	O
Sega	B-Device
CD	I-Device
was	O
also	O
planned	O
,	O
but	O
was	O
canceled	O
in	O
favor	O
of	O
Sonic	B-Application
CD	I-Application
.	O
</s>
<s>
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
was	O
a	O
commercial	O
success	O
.	O
</s>
<s>
It	O
became	O
America	O
's	O
best-selling	B-Application
video	I-Application
game	I-Application
for	O
several	O
months	O
in	O
1991	O
,	O
outselling	O
Super	B-Application
Mario	I-Application
.	O
</s>
<s>
By	O
Christmas	O
1991	O
,	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
had	O
sold	O
nearly	O
game	B-Protocol
cartridges	I-Protocol
in	O
the	O
United	O
States	O
.	O
</s>
<s>
In	O
the	O
United	O
Kingdom	O
,	O
it	O
was	O
the	O
top-selling	O
Mega	B-Operating_System
Drive	I-Operating_System
game	O
for	O
two	O
months	O
following	O
its	O
release	O
.	O
</s>
<s>
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
was	O
the	O
best-selling	O
home	O
video	B-Application
game	I-Application
of	I-Application
1991	I-Application
,	O
with	O
copies	O
sold	O
worldwide	O
by	O
the	O
end	O
of	O
the	O
year	O
,	O
becoming	O
Sega	O
's	O
best-selling	O
home	O
video	O
game	O
up	O
until	O
then	O
.	O
</s>
<s>
In	O
1991	O
,	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
helped	O
Sega	O
generate	O
a	O
gross	O
revenue	O
of	O
in	O
console	O
sales	O
and	O
capture	O
a	O
65%	O
share	O
of	O
the	O
European	O
console	O
market	O
.	O
</s>
<s>
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
set	O
a	O
Sega	O
software	O
sales	O
record	O
with	O
cartridges	B-Protocol
sold	O
by	O
March	O
1992	O
,	O
including	O
copies	O
in	O
the	O
United	O
States	O
and	O
another	O
in	O
Europe	O
and	O
Japan	O
.	O
</s>
<s>
The	O
original	O
version	O
bundled	O
with	O
the	O
Sega	B-Operating_System
Genesis/Mega	I-Operating_System
Drive	I-Operating_System
hardware	O
had	O
sold	O
over	O
15million	O
copies	O
,	O
.	O
</s>
<s>
The	O
mobile	B-Application
game	I-Application
version	O
also	O
had	O
eight	O
million	O
paid	O
downloads	O
by	O
2008	O
,	O
482,960	O
units	O
were	O
sold	O
on	O
Xbox	B-Device
Live	I-Device
Arcade	I-Device
,	O
and	O
over	O
500,000	O
paid	O
Android	B-Application
downloads	O
were	O
sold	O
between	O
2013	O
and	O
2016	O
,	O
bringing	O
total	O
sales	O
to	O
approximately	O
copies	O
sold	O
worldwide	O
across	O
all	O
platforms	O
.	O
</s>
<s>
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
was	O
praised	O
by	O
critics	O
,	O
with	O
scores	O
above	O
90%	O
from	O
most	O
video	O
game	O
magazines	O
at	O
the	O
time	O
.	O
</s>
<s>
It	O
was	O
considered	O
Sega	O
's	O
answer	O
to	O
Nintendo	O
's	O
widely	O
popular	O
Mario	B-Application
series	I-Application
,	O
as	O
it	O
was	O
a	O
platformer	O
featuring	O
the	O
company	O
's	O
mascot	O
.	O
</s>
<s>
In	O
a	O
preview	O
following	O
its	O
CES	O
debut	O
in	O
January	O
1991	O
,	O
John	O
Cook	O
of	O
Computer	O
and	O
Video	O
Games	O
called	O
it	O
the	O
most	O
impressive	O
game	O
at	O
the	O
show	O
and	O
said	O
it	O
was	O
"	O
another	O
jumpy	O
jumpy	O
game	O
in	O
the	O
Mario	B-Application
mould	O
,	O
but	O
with	O
an	O
astonishing	O
turn	O
of	O
speed	O
and	O
great	O
music.	O
"	O
</s>
<s>
Upon	O
release	O
,	O
Paul	O
Rand	O
of	O
Computer	O
and	O
Video	O
Games	O
compared	O
the	O
two	O
in	O
depth	O
and	O
characterized	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
as	O
being	O
faster	O
,	O
with	O
brighter	O
colors	O
,	O
and	O
Super	B-Application
Mario	I-Application
World	I-Application
as	O
having	O
more	O
"	O
depth	O
of	O
play	O
"	O
.	O
</s>
<s>
Frank	O
Ladoire	O
of	O
believed	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
was	O
part	O
of	O
a	O
new	O
generation	O
of	O
games	O
that	O
demonstrate	O
that	O
the	O
Mega	B-Operating_System
Drive	I-Operating_System
is	O
capable	O
of	O
"	O
beautiful	O
things	O
"	O
in	O
the	O
technical	O
department	O
.	O
</s>
<s>
Rand	O
called	O
its	O
color	O
scheme	O
"	O
lively	O
,	O
but	O
never	O
garish	O
"	O
,	O
praising	O
the	O
interaction	O
of	O
color	O
with	O
detail	O
in	O
the	O
sprites	O
,	O
backgrounds	O
,	O
and	O
animations	O
and	O
describing	O
its	O
graphics	O
as	O
the	O
best	O
available	O
for	O
the	O
Mega	B-Operating_System
Drive	I-Operating_System
.	O
</s>
<s>
The	O
Lessers	O
(	O
Hartley	O
,	O
Patricia	O
,	O
and	O
Kirk	O
)	O
of	O
Dragon	O
claimed	O
the	O
graphics	O
made	O
Sonic	B-Application
a	O
possible	O
contender	O
for	O
the	O
best	O
game	O
of	O
1991	O
and	O
GameZone	O
called	O
the	O
animation	O
"	O
some	O
of	O
the	O
smoothest	O
and	O
fastest	O
...	O
ever	O
seen	O
"	O
.	O
</s>
<s>
Rand	O
said	O
about	O
the	O
gameplay	O
in	O
general	O
that	O
it	O
"	O
plays	O
like	O
a	O
dream	O
"	O
;	O
according	O
to	O
GameZone	O
it	O
would	O
enchant	O
players	O
for	O
hours	O
,	O
and	O
Boogie	O
Man	O
praised	O
Sonic	B-Application
Team	O
's	O
ability	O
to	O
provide	O
an	O
engaging	O
experience	O
primarily	O
from	O
running	O
and	O
jumping	O
.	O
</s>
<s>
At	O
the	O
1991	O
Golden	O
Joystick	O
Awards	O
,	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
won	O
Overall	O
Game	O
of	O
the	O
Year	O
.	O
</s>
<s>
In	O
the	O
1991	O
Electronic	O
Gaming	O
Monthly	O
awards	O
,	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
won	O
Game	O
of	O
the	O
Year	O
.	O
</s>
<s>
In	O
1992	O
,	O
Mega	O
ranked	O
Sonic	B-Application
as	O
their	O
third-favorite	O
Genesis	O
game	O
.	O
</s>
<s>
In	O
2016	O
,	O
The	O
Strong	O
National	O
Museum	O
of	O
Play	O
inducted	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
to	O
its	O
World	O
Video	O
Game	O
Hall	O
of	O
Fame	O
.	O
</s>
<s>
Retrospective	O
reception	O
has	O
been	O
positive	O
,	O
with	O
an	O
86%	O
rating	O
at	O
the	O
review	B-Application
aggregator	I-Application
GameRankings	O
based	O
on	O
nine	O
reviews	O
published	O
online	O
in	O
the	O
2000s	O
.	O
</s>
<s>
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
has	O
maintained	O
its	O
popularity	O
,	O
and	O
has	O
since	O
been	O
considered	O
one	O
of	O
the	O
greatest	O
video	O
games	O
of	O
all	O
time	O
.	O
</s>
<s>
Frank	O
Provo	O
of	O
GameSpot	O
described	O
the	O
game	O
as	O
"	O
one	O
of	O
the	O
best	O
platformers	O
of	O
all	O
time	O
"	O
,	O
finding	O
that	O
despite	O
technical	O
issues	O
in	O
the	O
Game	B-Device
Boy	I-Device
Advance	I-Device
port	O
"	O
after	O
all	O
these	O
years	O
,	O
the	O
underlying	O
graphics	O
,	O
audio	O
,	O
and	O
gameplay	O
still	O
hold	O
up	O
"	O
.	O
</s>
<s>
Writing	O
in	O
The	O
Guardian	O
,	O
Keith	O
Stuart	O
observed	O
that	O
Sonic	B-Application
the	I-Application
Hedgehogs	I-Application
emphasis	O
on	O
speed	O
and	O
pinball	O
mechanics	O
dramatically	O
departs	O
from	O
generally	O
accepted	O
precepts	O
of	O
game	O
design	O
,	O
requiring	O
that	O
players	O
"	O
learn	O
through	O
repetition	O
rather	O
than	O
observation	O
"	O
as	O
"	O
the	O
levels	O
are	O
n't	O
designed	O
to	O
be	O
seen	O
or	O
even	O
understood	O
in	O
one	O
playthrough.	O
"	O
</s>
<s>
However	O
,	O
Stuart	O
concluded	O
that	O
"	O
sometimes	O
in	O
Sonic	B-Application
,	O
when	O
you	O
get	O
better	O
,	O
or	O
through	O
sheer	O
luck	O
,	O
things	O
take	O
off	O
,	O
every	O
jump	O
is	O
right	O
,	O
every	O
loop-the-loop	O
is	O
perfect	O
,	O
and	O
you	O
're	O
in	O
the	O
flow	O
,	O
sailing	O
above	O
the	O
game	O
's	O
strange	O
structure	O
...	O
Sonic	B-Application
is	O
incorrect	O
game	O
design	O
and	O
yet	O
...	O
it	O
's	O
a	O
masterpiece.	O
"	O
</s>
<s>
Primarily	O
because	O
of	O
its	O
Genesis	O
bundling	O
,	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
was	O
a	O
factor	O
in	O
popularising	O
the	O
console	O
in	O
North	O
America	O
,	O
thus	O
solidifying	O
it	O
as	O
a	O
competitor	O
to	O
Nintendo	O
and	O
their	O
Super	B-Application
Nintendo	I-Application
Entertainment	I-Application
System	I-Application
.	O
</s>
<s>
During	O
October	O
–	O
December	O
1991	O
with	O
the	O
game	O
's	O
success	O
,	O
the	O
Genesis	O
outsold	O
the	O
SNES	B-Application
by	O
two	O
to	O
one	O
;	O
at	O
its	O
January	O
1992	O
peak	O
it	O
gained	O
a	O
foothold	O
in	O
the	O
industry	O
and	O
had	O
65	O
percent	O
of	O
the	O
market	O
for	O
16-bit	B-Application
consoles	I-Application
.	O
</s>
<s>
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
inspired	O
similar	O
platformers	O
starring	O
animal	O
mascots	O
,	O
including	O
Bubsy	O
,	O
Aero	B-Application
the	I-Application
Acro-Bat	I-Application
,	O
James	B-Application
Pond	I-Application
3	I-Application
,	O
Earthworm	B-Application
Jim	I-Application
,	O
Zero	B-Application
the	I-Application
Kamikaze	I-Application
Squirrel	I-Application
,	O
and	O
Radical	B-Application
Rex	I-Application
.	O
</s>
<s>
"	O
Animal	O
with	O
attitude	O
"	O
games	O
carried	O
over	O
to	O
the	O
next	O
generation	O
of	O
consoles	O
,	O
with	O
the	O
developers	O
of	O
Crash	B-Application
Bandicoot	I-Application
and	O
Gex	B-Application
citing	O
Sonic	B-Application
as	O
a	O
major	O
inspiration	O
.	O
</s>
<s>
Sonic	B-Application
's	O
success	O
led	O
to	O
an	O
extensive	O
media	O
franchise	B-Application
,	O
with	O
the	O
first	O
of	O
many	O
sequels	O
,	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
2	I-Application
,	O
released	O
the	O
following	O
year	O
.	O
</s>
<s>
It	O
has	O
generated	O
dozens	O
of	O
additional	O
games	O
and	O
a	O
large	O
cast	O
of	O
recurring	O
characters	O
,	O
keeping	O
Sonic	B-Application
and	O
Robotnik	O
(	O
later	O
renamed	O
as	O
Eggman	O
)	O
mainstays	O
,	O
and	O
continued	O
beyond	O
Sega	O
's	O
exit	O
from	O
the	O
console	O
industry	O
after	O
the	B-Operating_System
Dreamcast	I-Operating_System
.	O
</s>
<s>
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
is	O
one	O
of	O
the	O
best-selling	B-Application
video	I-Application
game	I-Application
franchises	I-Application
of	O
all	O
time	O
,	O
with	O
over	O
140million	O
copies	O
sold	O
or	O
downloaded	O
worldwide	O
across	O
consoles	O
,	O
PC	O
's	O
,	O
mobile	O
phones	O
and	O
tablets	O
by	O
May	O
2014	O
.	O
</s>
<s>
The	O
game	O
's	O
first	O
level	O
,	O
Green	O
Hill	O
Zone	O
,	O
has	O
been	O
featured	O
in	O
later	O
games	O
such	O
as	O
Sonic	B-Application
Adventure	I-Application
2	I-Application
,	O
Sonic	B-Application
Generations	I-Application
,	O
Sonic	B-Application
Mania	I-Application
,	O
Sonic	B-Application
Forces	I-Application
,	O
and	O
the	O
Super	B-Application
Smash	I-Application
Bros	I-Application
.	I-Application
series	O
.	O
</s>
<s>
The	O
game	O
inspired	O
a	O
number	O
of	O
unofficial	O
variants	O
,	O
including	O
Somari	B-Device
,	O
a	O
pirated	O
Nintendo	O
Entertainment	O
System	O
conversion	O
featuring	O
Nintendo	O
's	O
Mario	B-Application
character	O
in	O
levels	O
from	O
the	O
original	O
Sonic	B-Application
game	O
,	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
Megamix	I-Application
,	O
a	O
total	O
conversion	O
mod	O
of	O
the	O
original	O
game	O
,	O
and	O
Sonic	B-Application
1	O
Boomed	O
,	O
a	O
ROM	O
hack	O
which	O
implements	O
Sonic	B-Application
's	O
redesign	O
from	O
the	O
Sonic	B-Application
Boom	I-Application
animated	O
series	O
.	O
</s>
