<s>
Sonic	B-Application
Rivals	I-Application
2	I-Application
is	O
a	O
2007	O
racing	O
video	O
game	O
,	O
the	O
sequel	O
to	O
the	O
2006	O
game	O
Sonic	B-Device
Rivals	I-Device
.	O
</s>
<s>
The	O
game	O
was	O
developed	O
by	O
Backbone	O
Entertainment	O
and	O
supervised	O
by	O
Sega	O
Studio	O
USA	O
,	O
for	O
the	O
PlayStation	B-Operating_System
Portable	I-Operating_System
handheld	O
video	O
game	O
console	O
.	O
</s>
<s>
Sonic	B-Application
Rivals	I-Application
2	I-Application
was	O
released	O
across	O
November	O
and	O
December	O
2007	O
.	O
</s>
<s>
Sonic	B-Application
Rivals	I-Application
2	I-Application
has	O
four	O
main	O
Single	O
Player	O
modes	O
.	O
</s>
<s>
In	O
this	O
single	O
player	O
mode	O
,	O
players	O
can	O
choose	O
any	O
one	O
of	O
the	O
eight	O
characters	O
and	O
play	O
through	O
the	O
zones	O
in	O
traditional	O
2D	O
Sonic	B-Device
fashion	O
.	O
</s>
<s>
The	O
cards	O
themselves	O
contain	O
art	O
from	O
various	O
older	O
Sonic	B-Device
games	O
,	O
and	O
can	O
unlock	O
things	O
such	O
as	O
alternate	O
suits	O
for	O
the	O
characters	O
.	O
</s>
<s>
Sonic	B-Application
Rivals	I-Application
2	I-Application
boasts	O
a	O
new	O
multiplayer	O
"	O
Battle	O
Mode	O
"	O
with	O
six	O
different	O
types	O
of	O
competition	O
in	O
addition	O
to	O
the	O
main	O
race	O
mode	O
.	O
</s>
<s>
Capture	O
the	O
Chao	O
is	O
a	O
Sonic	B-Device
themed	O
version	O
of	O
Capture	B-Application
the	I-Application
Flag	I-Application
.	O
</s>
<s>
Tag	O
is	O
a	O
Sonic	B-Device
themed	O
cross	O
between	O
Hot	O
Potato	O
and	O
Tag	O
.	O
</s>
<s>
Sonic	B-Application
Rivals	I-Application
2	I-Application
features	O
eight	O
playable	O
characters	O
,	O
including	O
all	O
five	O
characters	O
from	O
the	O
previous	B-Device
title	I-Device
.	O
</s>
<s>
For	O
example	O
,	O
Shadow	B-Application
's	O
"	O
Chaos	O
Control	O
"	O
move	O
has	O
the	O
ability	O
to	O
slow	O
down	O
the	O
other	O
player	O
's	O
movement	O
for	O
a	O
few	O
seconds	O
.	O
</s>
<s>
The	O
character	O
roster	O
is	O
split	O
into	O
teams	O
of	O
two	O
(	O
Sonic	B-Device
and	O
Tails	O
;	O
Shadow	B-Application
and	O
Metal	O
Sonic	B-Device
;	O
Silver	O
and	O
Espio	O
;	O
Knuckles	O
and	O
Rouge	O
)	O
,	O
with	O
each	O
team	O
having	O
its	O
own	O
story	O
campaign	O
that	O
tells	O
the	O
events	O
of	O
the	O
game	O
's	O
story	O
from	O
their	O
perspective	O
.	O
</s>
<s>
Sonic	B-Device
and	O
Tails	O
are	O
investigating	O
the	O
disappearances	O
of	O
several	O
Chao	O
.	O
</s>
<s>
Elsewhere	O
,	O
Shadow	B-Application
is	O
met	O
by	O
Metal	O
Sonic	B-Device
,	O
who	O
is	O
being	O
used	O
by	O
Eggman	O
as	O
a	O
communication	O
device	O
.	O
</s>
<s>
Shadow	B-Application
and	O
Metal	O
Sonic	B-Device
set	O
out	O
to	O
retrieve	O
the	O
Chaos	O
Emeralds	O
before	O
Nega	O
does	O
.	O
</s>
<s>
Despite	O
Rouge	O
only	O
collecting	O
six	O
of	O
the	O
Emeralds	O
,	O
the	O
portal	O
to	O
the	O
Ifrit	O
's	O
dimension	O
still	O
opens	O
,	O
and	O
Nega	O
dispatches	O
his	O
own	O
"	O
Metal	O
Sonic	B-Device
3.0	O
"	O
robot	O
to	O
awaken	O
the	O
Ifrit	O
.	O
</s>
<s>
Shadow	B-Application
and	O
Metal	O
Sonic	B-Device
close	O
the	O
portal	O
,	O
trapping	O
themselves	O
and	O
Eggman	O
Nega	O
in	O
the	O
Ifrit	O
's	O
dimension	O
.	O
</s>
<s>
However	O
,	O
Metal	O
Sonic	B-Device
reveals	O
the	O
seventh	O
Chaos	O
Emerald	O
inside	O
his	O
chassis	O
,	O
and	O
Shadow	B-Application
uses	O
it	O
to	O
teleport	O
them	O
back	O
to	O
their	O
dimension	O
,	O
leaving	O
Nega	O
behind	O
.	O
</s>
<s>
Sonic	B-Device
and	O
Tails	O
free	O
all	O
the	O
Chao	O
,	O
taking	O
them	O
back	O
to	O
a	O
Chao	O
Garden	O
to	O
relax	O
.	O
</s>
<s>
Sonic	B-Application
Rivals	I-Application
2	I-Application
received	O
"	O
mixed	O
or	O
average	O
reviews	O
"	O
from	O
critics	O
according	O
to	O
Metacritic	O
,	O
averaging	O
a	O
60/100	O
.	O
</s>
<s>
In	O
March	O
2009	O
,	O
Sonic	B-Device
Rivals	I-Device
was	O
certified	O
as	O
part	O
of	O
Sony	O
's	O
Greatest	B-Device
Hits	I-Device
budget	O
line	O
,	O
representing	O
North	O
American	O
sales	O
of	O
at	O
least	O
250,000	O
.	O
</s>
<s>
Sonic	B-Application
Rivals	I-Application
2	I-Application
soon	O
followed	O
.	O
</s>
