<s>
Robopon	B-Device
2	I-Device
Ring	O
Version	O
and	O
Robopon	B-Device
2	I-Device
Cross	O
Version	O
are	O
video	O
games	O
published	O
by	O
Atlus	O
and	O
released	O
for	O
the	O
Game	B-Device
Boy	I-Device
Advance	I-Device
in	O
2001	O
–	O
2002	O
.	O
</s>
<s>
They	O
are	O
sequels	O
to	O
the	O
Game	B-Device
Boy	I-Device
Color	I-Device
game	O
Robopon	B-Application
.	O
</s>
<s>
Their	O
simultaneous	O
release	O
is	O
similar	O
to	O
how	O
the	O
Pokémon	O
series	O
of	O
video	O
games	O
are	O
released	O
in	O
pairs	O
of	O
games	O
(	O
such	O
as	O
Pokémon	B-Application
Red	I-Application
and	I-Application
Blue	I-Application
)	O
to	O
promote	O
inter-connectivity	O
between	O
them	O
.	O
</s>
<s>
The	O
games	O
are	O
a	O
sequel	O
to	O
the	O
earlier	O
2000	B-Application
Game	B-Device
Boy	I-Device
Color	I-Device
game	O
Robopon	B-Application
Sun	I-Application
.	O
</s>
<s>
The	O
Robopon	B-Application
bears	O
much	O
similarity	O
to	O
Nintendo	O
's	O
series	O
of	O
Pokémon	O
games	O
,	O
and	O
thus	O
is	O
often	O
considered	O
to	O
be	O
a	O
Pokémon	O
clone	O
,	O
but	O
also	O
bears	O
similarity	O
to	O
the	O
lesser	O
known	O
Super	B-Application
Nintendo	I-Application
Entertainment	I-Application
System	I-Application
game	O
Robotrek	B-Application
,	O
released	O
by	O
the	O
Japanese	O
game	O
company	O
Enix	O
(	O
now	O
Square	O
Enix	O
)	O
.	O
</s>
<s>
After	O
the	O
events	O
of	O
the	O
first	O
game	O
,	O
the	O
now	O
number	O
one	O
Legend	O
of	O
Porombo	O
Island	O
,	O
Cody	O
,	O
sets	O
out	O
for	O
new	O
lands	O
and	O
new	O
titles	O
,	O
but	O
forgets	O
his	O
Robopon	B-Application
.	O
</s>
<s>
He	O
decides	O
to	O
become	O
the	O
Robopon	B-Application
champion	O
of	O
this	O
land	O
;	O
however	O
,	O
in	O
order	O
to	O
do	O
this	O
,	O
he	O
must	O
obtain	O
the	O
one-of-a-kind	O
XStones	O
and	O
challenge	O
the	O
rank-holders	O
of	O
Majiko	O
.	O
</s>
<s>
Within	O
both	O
versions	O
of	O
Robopon	B-Device
2	I-Device
,	O
Robopon	B-Application
can	O
be	O
created	O
by	O
finding	O
different	O
types	O
of	O
batteries	O
and	O
combining	O
them	O
(	O
this	O
process	O
in	O
known	O
as	O
"	O
sparking	O
"	O
)	O
.	O
</s>
<s>
Each	O
different	O
combination	O
of	O
batteries	O
produces	O
a	O
different	O
type	O
of	O
Robopon	B-Application
.	O
</s>
<s>
Robopon	B-Device
2	I-Device
also	O
builds	O
upon	O
the	O
battle	O
system	O
of	O
the	O
first	O
game	O
by	O
implementing	O
four-on-four	O
battles	O
,	O
allowing	O
the	O
player	O
's	O
whole	O
party	O
of	O
Robopons	B-Application
to	O
participate	O
in	O
one	O
big	O
battle	O
.	O
</s>
<s>
Another	O
less	O
drastic	O
change	O
from	O
Robopon	B-Application
is	O
the	O
ability	O
to	O
change	O
the	O
colour	O
of	O
the	O
player	O
's	O
Robopon	B-Application
.	O
</s>
<s>
Both	O
Robopon	B-Device
2	I-Device
games	O
received	O
"	O
average	O
"	O
reviews	O
according	O
to	O
video	O
game	O
review	B-Application
aggregator	I-Application
Metacritic	O
.	O
</s>
<s>
GameSpot	O
named	O
Robopon	B-Device
2	I-Device
the	O
second-best	O
Game	B-Device
Boy	I-Device
Advance	I-Device
game	O
of	O
August	O
2002	O
.	O
</s>
