<s>
is	O
a	O
2005	O
platform	O
video	O
game	O
developed	O
by	O
Sonic	B-Application
Team	O
and	O
Dimps	O
for	O
the	O
Nintendo	B-Device
DS	I-Device
as	O
part	O
of	O
Sega	O
's	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
series	I-Application
.	O
</s>
<s>
It	O
was	O
released	O
on	O
November	O
15	O
,	O
2005	O
,	O
in	O
North	O
America	O
,	O
November	O
18	O
in	O
the	O
PAL	O
region	O
,	O
and	O
November	O
23	O
in	O
Japan	O
,	O
and	O
was	O
the	O
final	O
game	O
in	O
the	O
mainline	O
Sonic	B-Application
series	I-Application
to	O
be	O
produced	O
by	O
Yuji	O
Naka	O
before	O
his	O
departure	O
from	O
Sega	O
.	O
</s>
<s>
It	O
is	O
a	O
2D	O
platform	O
game	O
,	O
similar	O
to	O
earlier	O
games	O
in	O
the	O
series	O
like	O
Sonic	B-Application
Advance	I-Application
,	O
as	O
well	O
as	O
later	O
ones	O
like	O
Sonic	B-Application
Mania	I-Application
.	O
</s>
<s>
Levels	O
in	O
the	O
game	O
are	O
side-scrolling	O
and	O
displayed	O
using	O
both	O
of	O
the	O
DS	B-Device
's	O
screens	O
.	O
</s>
<s>
The	O
game	O
's	O
storyline	O
follows	O
the	O
intertwining	O
adventures	O
of	O
the	O
series	O
 '	O
main	O
character	O
,	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
and	O
a	O
new	O
character	O
,	O
Blaze	O
the	O
Cat	O
.	O
</s>
<s>
The	O
game	O
was	O
announced	O
under	O
the	O
working	O
title	O
Sonic	B-Application
DS	I-Application
at	O
Electronic	O
Entertainment	O
Expo	O
(	O
E3	O
)	O
2004	O
,	O
and	O
under	O
Sonic	B-Application
Rush	I-Application
at	O
E3	O
2005	O
.	O
</s>
<s>
The	O
game	O
's	O
2.5D	O
format	O
was	O
based	O
on	O
Sonic	B-Application
Team	O
's	O
idea	O
to	O
combine	O
elements	O
from	O
2D	O
and	O
3D	O
games	O
in	O
the	O
series	O
.	O
</s>
<s>
Upon	O
release	O
,	O
Sonic	B-Application
Rush	I-Application
was	O
well	O
received	O
by	O
critics	O
,	O
with	O
praise	O
stemming	O
from	O
the	O
game	O
's	O
visuals	O
,	O
music	O
,	O
and	O
similarity	O
to	O
older	O
games	O
in	O
the	O
series	O
and	O
criticism	O
stemming	O
from	O
its	O
overall	O
quickness	O
.	O
</s>
<s>
A	O
sequel	O
,	O
Sonic	B-Application
Rush	I-Application
Adventure	I-Application
,	O
was	O
released	O
in	O
2007	O
.	O
</s>
<s>
Sonic	B-Application
Rush	I-Application
is	O
a	O
2D	O
platform	O
game	O
,	O
similar	O
to	O
earlier	O
games	O
in	O
the	O
series	O
as	O
well	O
as	O
later	O
ones	O
like	O
Sonic	B-Application
Advance	I-Application
and	O
Sonic	B-Application
Mania	I-Application
.	O
</s>
<s>
The	O
player	O
controls	O
either	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
or	O
Blaze	O
the	O
Cat	O
,	O
who	O
differ	O
in	O
terms	O
of	O
special	O
abilities	O
.	O
</s>
<s>
In	O
the	O
tradition	O
of	O
past	O
Sonic	B-Application
games	O
,	O
gameplay	O
consists	O
of	O
moving	O
quickly	O
through	O
levels	O
,	O
collecting	O
rings	O
and	O
defeating	O
enemies	O
.	O
</s>
<s>
Both	O
of	O
the	O
DS	B-Device
's	O
screens	O
are	O
used	O
to	O
display	O
the	O
play	O
area	O
,	O
with	O
the	O
player	O
's	O
character	O
moving	O
between	O
them	O
as	O
necessary	O
.	O
</s>
<s>
The	O
course	O
of	O
the	O
game	O
differs	O
depending	O
on	O
whether	O
Sonic	B-Application
or	O
Blaze	O
is	O
chosen	O
;	O
the	O
seven	O
zones	O
are	O
the	O
same	O
,	O
but	O
are	O
accessed	O
in	O
different	O
orders	O
.	O
</s>
<s>
During	O
boss	O
battles	O
,	O
Blaze	O
fights	O
Doctor	O
Eggman	O
and	O
Sonic	B-Application
fights	O
an	O
Eggman	O
doppelgänger	O
called	O
Eggman	O
Nega	O
.	O
</s>
<s>
These	O
Special	O
Stages	O
resemble	O
those	O
of	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
2	I-Application
and	O
use	O
the	O
DS	B-Device
 '	O
stylus	O
controls	O
.	O
</s>
<s>
There	O
is	O
a	O
point	O
system	O
based	O
on	O
the	O
one	O
in	O
Sonic	B-Application
Advance	I-Application
2	I-Application
but	O
displaying	O
points	O
in	O
multiple	O
categories	O
.	O
</s>
<s>
Sonic	B-Application
Rush	I-Application
introduces	O
a	O
"	O
Tension	O
Gauge	O
"	O
on	O
the	O
left	O
side	O
of	O
the	O
screen	O
which	O
is	O
filled	O
by	O
doing	O
tricks	O
and	O
defeating	O
enemies	O
.	O
</s>
<s>
The	O
energy	O
it	O
generates	O
allows	O
the	O
player	O
to	O
use	O
boosts	O
of	O
speed	O
while	O
moving	O
;	O
defeating	O
enemies	O
,	O
moving	O
through	O
the	O
level	O
more	O
quickly	O
,	O
which	O
results	O
in	O
more	O
points	O
and	O
a	O
higher	O
grade	O
,	O
and	O
when	O
playing	O
as	O
Sonic	B-Application
,	O
accessing	O
the	O
special	O
stage	O
.	O
</s>
<s>
For	O
the	O
first	O
time	O
in	O
the	O
series	O
,	O
Sonic	B-Application
and	O
Blaze	O
's	O
sprites	O
are	O
rendered	O
in	O
3D	O
.	O
</s>
<s>
The	O
game	O
has	O
a	O
two-player	O
mode	O
in	O
which	O
Sonic	B-Application
and	O
Blaze	O
race	O
to	O
the	O
end	O
of	O
a	O
chosen	O
level	O
from	O
the	O
game	O
.	O
</s>
<s>
There	O
is	O
also	O
a	O
feature	O
in	O
which	O
players	O
who	O
own	O
the	O
game	O
can	O
send	O
a	O
demo	O
of	O
the	O
game	O
to	O
other	O
Nintendo	B-Device
DS	I-Device
users	O
.	O
</s>
<s>
Blaze	O
the	O
Cat	O
is	O
somehow	O
pulled	O
from	O
her	O
native	O
dimension	O
into	O
Sonic	B-Application
's	O
world	O
.	O
</s>
<s>
Meanwhile	O
,	O
Sonic	B-Application
is	O
searching	O
for	O
the	O
Chaos	O
Emeralds	O
,	O
which	O
have	O
been	O
stolen	O
by	O
Doctor	O
Eggman	O
Nega	O
,	O
Eggman	O
's	O
alternate	O
counterpart	O
from	O
Blaze	O
's	O
dimension	O
.	O
</s>
<s>
Sonic	B-Application
briefly	O
encounters	O
Blaze	O
during	O
his	O
search	O
,	O
but	O
she	O
departs	O
before	O
he	O
can	O
question	O
her	O
.	O
</s>
<s>
Suspicious	O
of	O
Blaze	O
,	O
Sonic	B-Application
and	O
Tails	O
begin	O
searching	O
for	O
her	O
.	O
</s>
<s>
Upon	O
finding	O
Blaze	O
and	O
Cream	O
,	O
Sonic	B-Application
questions	O
Blaze	O
about	O
her	O
nature	O
,	O
but	O
she	O
refuses	O
to	O
give	O
any	O
information	O
and	O
leaves	O
with	O
Cream	O
.	O
</s>
<s>
Sonic	B-Application
follows	O
her	O
to	O
Eggman	O
Nega	O
's	O
base	O
,	O
where	O
it	O
is	O
revealed	O
that	O
Eggman	O
and	O
Eggman	O
Nega	O
are	O
working	O
together	O
to	O
collect	O
both	O
the	O
Chaos	O
Emeralds	O
and	O
the	O
Sol	O
Emeralds	O
.	O
</s>
<s>
Sonic	B-Application
and	O
Blaze	O
fight	O
each	O
other	O
,	O
until	O
Sonic	B-Application
wins	O
the	O
fight	O
and	O
Blaze	O
realizes	O
the	O
error	O
of	O
her	O
ways	O
.	O
</s>
<s>
After	O
Eggman	O
kidnaps	O
Cream	O
,	O
Blaze	O
goes	O
after	O
him	O
while	O
Sonic	B-Application
takes	O
on	O
Nega	O
.	O
</s>
<s>
Sonic	B-Application
collects	O
the	O
last	O
of	O
the	O
seven	O
Chaos	O
Emeralds	O
and	O
catches	O
up	O
with	O
Blaze	O
,	O
who	O
fails	O
to	O
prevent	O
Eggman	O
and	O
Eggman	O
Nega	O
from	O
draining	O
the	O
Sol	O
Emeralds	O
's	O
power	O
for	O
their	O
Egg	O
Salamander	O
mech	O
.	O
</s>
<s>
As	O
the	O
world	O
begins	O
to	O
destabilize	O
,	O
Sonic	B-Application
and	O
his	O
friends	O
help	O
Blaze	O
realize	O
the	O
meaning	O
of	O
friendship	O
.	O
</s>
<s>
This	O
restores	O
the	O
Sol	O
Emeralds	O
,	O
and	O
Sonic	B-Application
and	O
Blaze	O
use	O
both	O
sets	O
of	O
Emeralds	O
to	O
transform	O
into	O
Super	O
Sonic	B-Application
and	O
Burning	O
Blaze	O
.	O
</s>
<s>
Cream	O
is	O
saddened	O
by	O
Blaze	O
's	O
departure	O
,	O
but	O
Sonic	B-Application
assures	O
her	O
that	O
Blaze	O
promised	O
to	O
return	O
someday	O
.	O
</s>
<s>
Sonic	B-Application
Rush	I-Application
was	O
developed	O
by	O
Sonic	B-Application
Team	O
and	O
Dimps	O
,	O
and	O
published	O
by	O
Sega	O
.	O
</s>
<s>
Yuji	O
Naka	O
,	O
Sega	O
's	O
executive	O
managing	O
director	O
,	O
announced	O
the	O
game	O
at	O
Electronic	O
Entertainment	O
Expo	O
(	O
E3	O
)	O
2004	O
,	O
along	O
with	O
Project	B-Device
Rub	I-Device
.	O
</s>
<s>
A	O
demo	O
of	O
the	O
newly	O
titled	O
Sonic	B-Application
Rush	I-Application
was	O
featured	O
at	O
E3	O
2005	O
,	O
and	O
won	O
video	O
game	O
publication	O
IGN	O
's	O
"	O
Biggest	O
Surprise	O
"	O
award	O
.	O
</s>
<s>
The	O
game	O
's	O
2.5D	O
format	O
was	O
based	O
on	O
Sonic	B-Application
Team	O
's	O
idea	O
to	O
combine	O
elements	O
from	O
2D	O
and	O
3D	O
games	O
in	O
the	O
series	O
.	O
</s>
<s>
Director	O
Akinori	O
Nishiyama	O
stated	O
in	O
a	O
September	O
2005	O
interview	O
with	O
GameSpot	O
that	O
Sonic	B-Application
Team	O
"	O
wanted	O
to	O
keep	O
the	O
elements	O
from	O
2D	O
,	O
yet	O
still	O
explore	O
some	O
of	O
the	O
new	O
elements	O
from	O
3D.	O
"	O
</s>
<s>
At	O
TGS	O
2005	O
,	O
he	O
stated	O
that	O
while	O
working	O
on	O
Sonic	B-Application
Advance	I-Application
3	I-Application
,	O
he	O
realized	O
that	O
the	O
series	O
was	O
becoming	O
more	O
complicated	O
,	O
opting	O
for	O
a	O
"	O
fast	O
,	O
dynamic	O
action	B-Application
"	O
approach	O
to	O
the	O
next	O
title	O
in	O
the	O
series	O
.	O
</s>
<s>
The	O
music	O
was	O
primarily	O
composed	O
by	O
Hideki	O
Naganuma	O
of	O
Jet	B-Application
Set	I-Application
Radio	I-Application
fame	O
.	O
</s>
<s>
Composing	O
the	O
music	O
was	O
a	O
challenge	O
for	O
Naganuma	O
,	O
who	O
had	O
to	O
work	O
under	O
the	O
limitations	O
of	O
the	O
Nintendo	B-Device
DS	I-Device
 '	O
sound	O
chip	O
.	O
</s>
<s>
Sonic	B-Application
Rush	I-Application
introduced	O
Blaze	O
,	O
who	O
has	O
become	O
a	O
recurring	O
character	O
in	O
the	O
series	O
.	O
</s>
<s>
Blaze	O
appeared	O
for	O
the	O
second	O
time	O
in	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
in	O
2006	O
,	O
and	O
then	O
in	O
Sonic	B-Application
Rush	I-Application
Adventure	I-Application
,	O
the	O
sequel	O
to	O
Sonic	B-Application
Rush	I-Application
,	O
and	O
numerous	O
other	O
games	O
.	O
</s>
<s>
Sonic	B-Application
Rush	I-Application
was	O
released	O
on	O
November	O
15	O
,	O
2005	O
,	O
in	O
North	O
America	O
;	O
November	O
18	O
in	O
Europe	O
;	O
and	O
November	O
23	O
in	O
Japan	O
.	O
</s>
<s>
It	O
was	O
the	O
ninth	O
best-selling	O
DS	B-Device
game	O
of	O
December	O
2006	O
.	O
</s>
<s>
The	O
game	O
was	O
released	O
to	O
"	O
generally	O
favorable	O
"	O
reviews	O
,	O
according	O
to	O
video	O
game	O
review	B-Application
aggregator	I-Application
Metacritic	O
.	O
</s>
<s>
Critics	O
praised	O
the	O
game	O
for	O
its	O
usage	O
of	O
elements	O
from	O
older	O
Sonic	B-Application
games	O
.	O
</s>
<s>
GameSpot	O
,	O
IGN	O
,	O
and	O
Nintendo	B-Application
Power	I-Application
compared	O
the	O
game	O
to	O
older	O
games	O
in	O
the	O
series	O
,	O
specifically	O
those	O
on	O
the	O
Sega	B-Operating_System
Genesis	I-Operating_System
.	O
</s>
<s>
The	O
game	O
's	O
music	O
was	O
well-received	O
,	O
called	O
"	O
bright	O
 [ and ] 	O
buoyant	O
"	O
by	O
1UP.com	O
and	O
compared	O
to	O
that	O
of	O
Jet	B-Application
Set	I-Application
Radio	I-Application
by	O
GameSpot	O
.	O
</s>
<s>
In	O
2008	O
,	O
Sonic	B-Application
Rush	I-Application
was	O
listed	O
at	O
#17	O
in	O
IGN	O
's	O
list	O
of	O
the	O
top	O
25	O
DS	B-Device
games	O
.	O
</s>
<s>
In	O
2009	O
,	O
it	O
was	O
listed	O
as	O
one	O
of	O
the	O
"	O
cheers	O
"	O
on	O
IGN	O
's	O
"	O
Cheers	O
&	O
Tears	O
"	O
list	O
of	O
action	B-Application
games	I-Application
for	O
the	O
DS	B-Device
.	O
</s>
