<s>
Knuckles	B-Application
 '	I-Application
Chaotix	I-Application
is	O
a	O
1995	O
platform	O
game	O
developed	O
by	O
Sega	O
for	O
the	O
32X	B-Device
.	O
</s>
<s>
A	O
spin-off	O
from	O
the	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
series	I-Application
,	O
it	O
features	O
Knuckles	O
the	O
Echidna	O
and	O
four	O
other	O
characters	O
known	O
as	O
the	O
Chaotix	B-Application
,	O
who	O
must	O
prevent	O
Doctor	O
Robotnik	O
and	O
Metal	O
Sonic	B-Application
from	O
obtaining	O
six	O
magic	O
rings	O
and	O
conquering	O
a	O
mysterious	O
island	O
.	O
</s>
<s>
Gameplay	O
is	O
similar	O
to	O
previous	O
Sonic	B-Application
games	O
:	O
players	O
complete	O
levels	O
while	O
collecting	O
rings	O
and	O
defeating	O
enemies	O
.	O
</s>
<s>
Knuckles	B-Application
 '	I-Application
Chaotix	I-Application
introduces	O
a	O
partner	O
system	O
whereby	O
the	O
player	O
is	O
connected	O
to	O
another	O
character	O
via	O
a	O
tether	O
;	O
the	O
tether	O
behaves	O
like	O
a	O
rubber	O
band	O
and	O
must	O
be	O
used	O
to	O
maneuver	O
the	O
characters	O
.	O
</s>
<s>
While	O
Sonic	B-Application
Team	O
is	O
sometimes	O
credited	O
with	O
creating	O
Knuckles	B-Application
 '	I-Application
Chaotix	I-Application
,	O
it	O
was	O
developed	O
by	O
another	O
Sega	O
team	O
.	O
</s>
<s>
Production	O
began	O
with	O
Sonic	B-Application
Crackers	O
,	O
a	O
1994	O
prototype	B-Application
for	O
the	O
Sega	B-Operating_System
Genesis	I-Operating_System
which	O
experimented	O
with	O
the	O
tethering	O
system	O
and	O
featured	O
Sonic	B-Application
and	O
Tails	O
.	O
</s>
<s>
Knuckles	B-Application
 '	I-Application
Chaotix	I-Application
was	O
planned	O
as	O
a	O
Sonic	B-Application
game	O
for	O
the	O
Sega	B-Device
Saturn	I-Device
,	O
but	O
transitioned	O
to	O
the	O
32X	B-Device
when	O
it	O
could	O
not	O
be	O
completed	O
in	O
time	O
.	O
</s>
<s>
Sonic	B-Application
and	O
Tails	O
were	O
replaced	O
by	O
Knuckles	O
and	O
a	O
group	O
of	O
mostly	O
pre-existing	O
characters	O
;	O
Mighty	O
the	O
Armadillo	O
first	O
appeared	O
in	O
the	O
arcade	O
game	O
SegaSonic	B-Application
the	I-Application
Hedgehog	I-Application
(	O
1993	O
)	O
.	O
</s>
<s>
Knuckles	B-Application
 '	I-Application
Chaotix	I-Application
was	O
released	O
in	O
North	O
America	O
and	O
Japan	O
in	O
April	O
1995	O
,	O
and	O
in	O
Europe	O
in	O
June	O
1995	O
.	O
</s>
<s>
Journalists	O
have	O
described	O
Knuckles	B-Application
 '	I-Application
Chaotix	I-Application
as	O
the	O
last	O
of	O
the	O
"	O
classic	O
"	O
2D	O
Sonic	B-Application
games	O
before	O
the	O
series	O
moved	O
to	O
3D	O
.	O
</s>
<s>
Some	O
characters	O
and	O
concepts	O
it	O
introduced	O
feature	O
in	O
later	O
Sonic	B-Application
games	O
and	O
media	O
,	O
beginning	O
with	O
Sonic	B-Application
Heroes	I-Application
in	O
2003	O
.	O
</s>
<s>
Despite	O
interest	O
from	O
fans	O
,	O
it	O
has	O
not	O
been	O
rereleased	O
beyond	O
a	O
brief	O
period	O
through	O
GameTap	B-Operating_System
in	O
the	O
mid-2000s	O
.	O
</s>
<s>
Knuckles	B-Application
 '	I-Application
Chaotix	I-Application
is	O
a	O
side-scrolling	O
platform	O
game	O
similar	O
to	O
earlier	O
entries	O
in	O
the	O
Sonic	B-Application
series	I-Application
.	O
</s>
<s>
Unlike	O
other	O
Sonic	B-Application
games	O
,	O
players	O
are	O
tethered	O
to	O
a	O
computer	O
or	O
human-controlled	O
partner	O
;	O
the	O
tether	O
behaves	O
like	O
a	O
rubber	O
band	O
and	O
must	O
be	O
properly	O
handled	O
to	O
maneuver	O
through	O
stages	O
.	O
</s>
<s>
The	O
story	O
takes	O
place	O
on	O
a	O
mysterious	O
island	O
and	O
follows	O
the	O
group	O
's	O
efforts	O
to	O
stop	O
Doctor	O
Robotnik	O
and	O
Metal	O
Sonic	B-Application
from	O
harnessing	O
the	O
power	O
of	O
the	O
island	O
's	O
mythical	O
Chaos	O
Rings	O
to	O
satisfy	O
their	O
evil	O
deeds	O
.	O
</s>
<s>
Like	O
earlier	O
Sonic	B-Application
games	O
,	O
players	O
collect	O
rings	O
,	O
jump	O
to	O
perform	O
a	O
spin	O
attack	O
to	O
defeat	O
enemies	O
,	O
and	O
can	O
perform	O
a	O
spin	O
dash	O
on	O
the	O
ground	O
to	O
gain	O
speed	O
.	O
</s>
<s>
The	O
partner	O
system	O
enables	O
players	O
to	O
perform	O
actions	O
not	O
seen	O
in	O
earlier	O
Sonic	B-Application
games	O
.	O
</s>
<s>
Collecting	O
all	O
Chaos	O
Rings	O
unlocks	O
the	O
"	O
good	O
"	O
ending	O
,	O
in	O
which	O
Sonic	B-Application
and	O
Tails	O
are	O
seen	O
with	O
the	O
Chaotix	B-Application
,	O
who	O
have	O
freed	O
the	O
island	O
from	O
Robotnik	O
.	O
</s>
<s>
Although	O
Sonic	B-Application
Team	O
is	O
sometimes	O
credited	O
for	O
developing	O
Knuckles	B-Application
 '	I-Application
Chaotix	I-Application
,	O
it	O
was	O
developed	O
by	O
another	O
internal	O
Sega	O
team	O
,	O
including	O
staff	O
who	O
had	O
worked	O
on	O
Sonic	B-Application
CD	I-Application
(	O
1993	O
)	O
.	O
</s>
<s>
Development	O
began	O
around	O
April	O
1994	O
for	O
the	O
Sega	B-Operating_System
Genesis	I-Operating_System
as	O
an	O
engine	O
test	O
,	O
with	O
the	O
working	O
title	O
Sonic	B-Application
Crackers	O
.	O
</s>
<s>
The	O
prototype	B-Application
featured	O
Sonic	B-Application
and	O
Tails	O
joined	O
by	O
an	O
elastic	O
band	O
of	O
energy	O
;	O
the	O
name	O
likely	O
comes	O
from	O
clackers	O
,	O
a	O
toy	O
comprising	O
two	O
balls	O
connected	O
by	O
string	O
.	O
</s>
<s>
According	O
to	O
the	O
journalist	O
Ken	O
Horowitz	O
,	O
Sonic	B-Application
Crackers	O
was	O
most	O
likely	O
a	O
ROM	B-General_Concept
made	O
to	O
demonstrate	O
new	O
concepts	O
to	O
management	O
.	O
</s>
<s>
Some	O
ideas	O
were	O
used	O
in	O
Sonic	B-Application
3D	I-Application
Blast	I-Application
(	O
1996	O
)	O
,	O
while	O
the	O
level	O
design	O
,	O
tethering	O
,	O
and	O
some	O
music	O
resurfaced	O
in	O
Knuckles	B-Application
 '	I-Application
Chaotix	I-Application
.	O
</s>
<s>
Sega	O
eventually	O
moved	O
development	O
to	O
the	O
Genesis	O
 '	O
more	O
powerful	O
32X	B-Device
add-on	O
.	O
</s>
<s>
According	O
to	O
Horowitz	O
,	O
this	O
was	O
because	O
the	O
16-bit	B-Application
era	I-Application
of	O
consoles	O
was	O
coming	O
to	O
an	O
end	O
.	O
</s>
<s>
Former	O
Sega	O
of	O
America	O
CEO	O
Tom	O
Kalinske	O
recalled	O
that	O
Knuckles	B-Application
 '	I-Application
Chaotix	I-Application
was	O
once	O
intended	O
for	O
the	O
Genesis	O
 '	O
successor	O
,	O
the	O
Sega	B-Device
Saturn	I-Device
,	O
as	O
a	O
mainline	O
Sonic	B-Application
game	O
.	O
</s>
<s>
According	O
to	O
Kalinske	O
,	O
development	O
moved	O
to	O
the	O
32X	B-Device
when	O
it	O
became	O
clear	O
that	O
the	O
game	O
would	O
not	O
be	O
ready	O
for	O
the	O
Saturn	B-Device
launch	O
;	O
Kalinske	O
said	O
it	O
was	O
"	O
too	O
big	O
,	O
it	O
was	O
taking	O
too	O
long	O
,	O
it	O
was	O
over	O
budgeted	O
,	O
it	O
was	O
behind	O
schedule	O
"	O
.	O
</s>
<s>
Because	O
Sega	O
needed	O
new	O
32X	B-Device
games	O
,	O
Sega	O
decided	O
to	O
downsize	O
the	O
game	O
and	O
introduce	O
it	O
quickly	O
on	O
32X	B-Device
.	O
</s>
<s>
By	O
December	O
1994	O
,	O
Sonic	B-Application
and	O
Tails	O
had	O
been	O
removed	O
and	O
the	O
game	O
had	O
been	O
reworked	O
to	O
star	O
Knuckles	O
the	O
Echidna	O
,	O
who	O
had	O
been	O
introduced	O
in	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
3	I-Application
(	O
1994	O
)	O
.	O
</s>
<s>
Mighty	O
had	O
appeared	O
in	O
the	O
arcade	O
game	O
SegaSonic	B-Application
the	I-Application
Hedgehog	I-Application
(	O
1993	O
)	O
;	O
many	O
of	O
Sonic	B-Application
's	O
animations	O
from	O
Crackers	O
were	O
repurposed	O
for	O
Mighty	O
.	O
</s>
<s>
Vector	O
the	O
Crocodile	O
was	O
created	O
for	O
the	O
original	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
(	O
1991	O
)	O
but	O
scrapped	O
before	O
release	O
,	O
and	O
Charmy	O
Bee	O
originally	O
appeared	O
in	O
the	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
manga	O
.	O
</s>
<s>
Sonic	B-Application
co-creator	O
Naoto	O
Ohshima	O
said	O
he	O
was	O
responsible	O
for	O
repurposing	O
Vector	O
and	O
Charmy	O
,	O
but	O
otherwise	O
had	O
no	O
involvement	O
with	O
Knuckles	B-Application
 '	I-Application
Chaotix	I-Application
.	O
</s>
<s>
A	O
leaked	O
prototype	B-Application
lists	O
Espio	O
as	O
the	O
featured	O
character	O
on	O
the	O
title	O
screen	O
instead	O
of	O
Knuckles	O
,	O
suggesting	O
he	O
once	O
featured	O
more	O
prominently	O
,	O
possibly	O
in	O
a	O
starring	O
role	O
.	O
</s>
<s>
The	O
32X	B-Device
's	O
processing	O
power	O
allowed	O
for	O
dynamic	O
sprite-scaling	O
effects	O
,	O
and	O
3D	B-Algorithm
polygons	I-Algorithm
in	O
the	O
special	O
stages	O
.	O
</s>
<s>
A	O
complex	O
palette	B-Data_Structure
system	O
allowed	O
each	O
level	O
to	O
load	O
unique	O
colors	O
.	O
</s>
<s>
Knuckles	B-Application
 '	I-Application
Chaotix	I-Application
was	O
released	O
in	O
North	O
America	O
in	O
April	O
1995	O
,	O
in	O
Japan	O
on	O
April	O
21	O
,	O
1995	O
,	O
and	O
in	O
Europe	O
in	O
June	O
1995	O
.	O
</s>
<s>
According	O
to	O
Horowitz	O
,	O
the	O
game	O
was	O
rushed	O
to	O
help	O
boost	O
sluggish	O
32X	B-Device
sales	O
.	O
</s>
<s>
It	O
quickly	O
faded	O
into	O
obscurity	O
,	O
and	O
is	O
now	O
considered	O
a	O
valuable	O
collector	O
's	O
item	O
due	O
to	O
the	O
32X	B-Device
's	O
commercial	O
failure	O
.	O
</s>
<s>
The	O
only	O
rerelease	O
came	O
in	O
2005	O
,	O
when	O
Knuckles	B-Application
 '	I-Application
Chaotix	I-Application
was	O
briefly	O
made	O
available	O
for	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
and	O
Windows	O
computers	O
via	O
the	O
subscription	O
service	O
GameTap	B-Operating_System
.	O
</s>
<s>
The	O
Sonic	B-Application
Crackers	O
prototype	B-Application
ROM	B-General_Concept
was	O
leaked	O
online	O
by	O
a	O
Belgian	O
hacking	O
group	O
in	O
June	O
1995	O
and	O
can	O
be	O
played	O
with	O
emulators	B-Device
.	O
</s>
<s>
A	O
cartridge	B-Protocol
version	O
was	O
auctioned	O
for	O
$146.50	O
in	O
2001	O
.	O
</s>
<s>
While	O
some	O
fans	O
speculated	O
that	O
the	O
Sonic	B-Application
Crackers	O
ROM	B-General_Concept
was	O
an	O
April	O
Fools	O
 '	O
Day	O
hoax	O
,	O
its	O
authenticity	O
has	O
been	O
corroborated	O
by	O
multiple	O
sources	O
,	O
including	O
references	O
in	O
an	O
internal	O
Sega	O
design	O
document	O
and	O
text	O
found	O
in	O
a	O
later	O
Knuckles	B-Application
 '	I-Application
Chaotix	I-Application
prototype	B-Application
.	O
</s>
<s>
Knuckles	B-Application
 '	I-Application
Chaotix	I-Application
received	O
mixed	O
reviews	O
,	O
and	O
failed	O
commercially	O
,	O
as	O
did	O
the	O
32X	B-Device
.	O
</s>
<s>
The	O
four	O
reviewers	O
of	O
Electronic	O
Gaming	O
Monthly	O
(	O
EGM	O
)	O
praised	O
its	O
graphics	O
and	O
believed	O
the	O
game	O
was	O
one	O
of	O
the	O
best	O
for	O
the	O
32X	B-Device
,	O
and	O
GameFan	O
considered	O
Knuckles	B-Application
 '	I-Application
Chaotix	I-Application
the	O
best	O
entry	O
in	O
the	O
franchise	O
since	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
2	I-Application
(	O
1992	O
)	O
.	O
</s>
<s>
GamePro	O
,	O
Game	B-Device
Players	I-Device
,	O
and	O
IGN	O
believed	O
the	O
game	O
failed	O
to	O
push	O
the	O
32X	B-Device
to	O
its	O
limits	O
,	O
citing	O
the	O
lack	O
of	O
graphical	O
effects	O
and	O
Genesis-quality	O
audio	O
,	O
though	O
IGN	O
felt	O
some	O
elements	O
,	O
such	O
as	O
several	O
musical	O
tracks	O
,	O
were	O
highlights	O
.	O
</s>
<s>
In	O
2008	O
,	O
GamesRadar	O
wrote	O
that	O
Knuckles	B-Application
 '	I-Application
Chaotix	I-Application
was	O
the	O
best	O
game	O
for	O
the	O
32X	B-Device
and	O
was	O
underrated	O
,	O
though	O
it	O
still	O
considered	O
the	O
game	O
a	O
"	O
wasted	O
opportunity	O
"	O
.	O
</s>
<s>
Though	O
IGN	O
admired	O
the	O
attempt	O
to	O
"	O
breathe	O
life	O
into	O
a	O
series	O
that	O
was	O
running	O
out	O
of	O
steam	O
"	O
and	O
fix	O
the	O
lopsided	O
multiplayer	O
of	O
Sonic	B-Application
2	I-Application
and	O
Sonic	B-Application
3	I-Application
(	O
1994	O
)	O
,	O
whereby	O
Tails	O
would	O
get	O
lost	O
off-screen	O
,	O
they	O
felt	O
the	O
physics	O
were	O
"	O
clunky	O
"	O
and	O
unorthodox	O
.	O
</s>
<s>
Game	B-Device
Players	I-Device
criticized	O
the	O
game	O
's	O
lack	O
of	O
replay	O
value	O
,	O
saying	O
the	O
game	O
's	O
simplicity	O
made	O
secrets	O
in	O
levels	O
impossible	O
to	O
miss	O
.	O
</s>
<s>
However	O
,	O
IGN	O
,	O
GameFan	O
,	O
and	O
EGM	O
praised	O
the	O
number	O
of	O
playable	O
characters	O
,	O
and	O
IGN	O
felt	O
the	O
game	O
's	O
"	O
marvelous	O
"	O
fully	O
3D	O
special	O
stages	O
were	O
the	O
best	O
of	O
the	O
Sonic	B-Application
series	I-Application
.	O
</s>
<s>
IGN	O
described	O
Knuckles	B-Application
 '	I-Application
Chaotix	I-Application
as	O
"	O
a	O
bad	O
game	O
with	O
a	O
good	O
foundation	O
"	O
,	O
and	O
in	O
another	O
article	O
,	O
concluded	O
that	O
it	O
was	O
interesting	O
,	O
if	O
flawed	O
.	O
</s>
<s>
EGM	O
felt	O
it	O
was	O
the	O
best	O
for	O
the	O
32X	B-Device
but	O
failed	O
to	O
live	O
up	O
to	O
previous	O
games	O
in	O
the	O
Sonic	B-Application
series	I-Application
.	O
</s>
<s>
Game	B-Device
Players	I-Device
found	O
it	O
a	O
major	O
disappointment	O
,	O
saying	O
"	O
other	O
than	O
a	O
few	O
color-enhanced	O
backgrounds	O
,	O
you	O
're	O
gonna	O
wonder	O
why	O
this	O
is	O
n't	O
a	O
Genesis	O
title	O
"	O
.	O
</s>
<s>
Some	O
journalists	O
have	O
referred	O
to	O
Knuckles	B-Application
 '	I-Application
Chaotix	I-Application
as	O
the	O
series	O
 '	O
declining	O
point	O
,	O
and	O
AllGame	O
and	O
Complex	O
both	O
wrote	O
that	O
it	O
was	O
among	O
the	O
worst	O
games	O
in	O
the	O
series	O
.	O
</s>
<s>
Knuckles	B-Application
 '	I-Application
Chaotix	I-Application
is	O
considered	O
the	O
last	O
of	O
the	O
"	O
classic	O
"	O
Sonic	B-Application
games	O
before	O
the	O
3D	O
game	O
Sonic	B-Application
Adventure	I-Application
(	O
1998	O
)	O
took	O
the	O
series	O
in	O
new	O
gameplay	O
directions	O
.	O
</s>
<s>
Several	O
of	O
its	O
concepts	O
were	O
re-used	O
in	O
later	O
Sonic	B-Application
games	O
.	O
</s>
<s>
A	O
similar	O
partner	O
system	O
features	O
in	O
the	O
Game	B-Device
Boy	I-Device
Advance	I-Device
game	O
Sonic	B-Application
Advance	I-Application
3	I-Application
(	O
2004	O
)	O
,	O
and	O
IGN	O
noted	O
similarities	O
between	O
the	O
game	O
's	O
auto-running	O
special	O
stages	O
and	O
Sonic	B-Application
and	I-Application
the	I-Application
Secret	I-Application
Rings	I-Application
(	O
2007	O
)	O
.	O
</s>
<s>
Two	O
tracks	O
from	O
Knuckles	B-Application
 '	I-Application
Chaotix	I-Application
,	O
"	O
Tube	O
Panic	O
"	O
and	O
"	O
Door	O
Into	O
Summer	O
"	O
,	O
appear	O
in	O
Sonic	B-Application
Generations	I-Application
(	O
2011	O
)	O
.	O
</s>
<s>
The	O
"	O
Hyper	O
Ring	O
"	O
power-up	O
re-appeared	O
in	O
Sonic	B-Application
Mania	I-Application
(	O
2017	O
)	O
and	O
a	O
recreation	O
of	O
Knuckles	O
 '	O
Chaotixs	O
final	O
boss	O
fight	O
was	O
added	O
in	O
a	O
2018	O
update	O
.	O
</s>
<s>
With	O
the	O
exception	O
of	O
Mighty	O
,	O
all	O
Chaotix	B-Application
members	O
have	O
become	O
recurring	O
characters	O
in	O
the	O
Sonic	B-Application
series	I-Application
.	O
</s>
<s>
The	O
characters	O
initially	O
did	O
not	O
reappear	O
until	O
Sonic	B-Application
Heroes	I-Application
in	O
2003	O
.	O
</s>
<s>
Director	O
Takashi	O
Iizuka	O
said	O
that	O
Sonic	B-Application
Team	O
revived	O
the	O
Chaotix	B-Application
because	O
the	O
studio	O
thought	O
they	O
were	O
unique	O
and	O
had	O
never	O
used	O
them	O
.	O
</s>
<s>
Iizuka	O
considers	O
the	O
Heroes	O
version	O
of	O
the	O
characters	O
different	O
from	O
the	O
32X	B-Device
one	O
,	O
claiming	O
to	O
have	O
created	O
new	O
characters	O
simply	O
using	O
the	O
same	O
designs	O
.	O
</s>
<s>
The	O
group	O
had	O
storylines	O
in	O
the	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
comic	O
series	O
produced	O
by	O
Archie	O
Comics	O
and	O
Sonic	B-Application
the	O
Comic	O
by	O
Fleetway	O
Publications	O
,	O
as	O
well	O
as	O
in	O
the	O
anime	O
series	O
Sonic	B-Application
X	O
.	O
</s>
<s>
While	O
Game	O
Informer	O
considered	O
the	O
Chaotix	B-Application
to	O
be	O
among	O
the	O
best	O
characters	O
of	O
the	O
franchise	O
and	O
are	O
underutilized	O
,	O
GamesRadar	O
considered	O
the	O
introduction	O
of	O
the	O
Chaotix	B-Application
a	O
negative	O
turning	O
point	O
for	O
the	O
series	O
as	O
it	O
"	O
diluted	O
the	O
Sonic-verse	O
by	O
introducing	O
tons	O
of	O
shitty	O
characters	O
"	O
.	O
</s>
<s>
Jim	O
Sterling	O
felt	O
that	O
all	O
the	O
Chaotix	B-Application
lacked	O
redeeming	O
qualities	O
,	O
calling	O
Vector	O
"	O
Idiot	O
the	O
Crocodile	O
"	O
and	O
Espio	O
"	O
Generic	O
Brooder	O
the	O
Chameleon	O
"	O
.	O
</s>
<s>
Mighty	O
would	O
eventually	O
return	O
as	O
a	O
playable	O
character	O
in	O
Sonic	B-Application
Mania	I-Application
Plus	O
in	O
2018	O
.	O
</s>
<s>
In	O
2011	O
,	O
Sega	O
noted	O
fans	O
frequently	O
requested	O
Knuckles	B-Application
 '	I-Application
Chaotix	I-Application
as	O
a	O
game	O
desired	O
to	O
be	O
rereleased	O
.	O
</s>
<s>
1UP.com	O
and	O
GameSpy	O
expressed	O
disappointment	O
the	O
2005	O
compilation	O
Sonic	B-Application
Gems	I-Application
Collection	I-Application
did	O
not	O
include	O
the	O
game	O
.	O
</s>
<s>
In	O
2010	O
,	O
Sonic	B-Application
Team	O
head	O
Iizuka	O
expressed	O
interest	O
in	O
developing	O
a	O
sequel	O
.	O
</s>
<s>
Also	O
expressing	O
interest	O
was	O
Christian	O
Whitehead	O
,	O
the	O
developer	O
of	O
the	O
mobile	O
versions	O
of	O
Sonic	B-Application
CD	I-Application
,	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
,	O
and	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
2	I-Application
,	O
saying	O
in	O
2014	O
that	O
he	O
would	O
be	O
open	O
to	O
remaking	O
Knuckles	B-Application
 '	I-Application
Chaotix	I-Application
using	O
the	O
Retro	B-Application
Engine	I-Application
.	O
</s>
