<s>
Retro	B-Application
Game	I-Application
Challenge	I-Application
is	O
a	O
Nintendo	B-Device
DS	I-Device
game	O
developed	O
by	O
indieszero	O
and	O
published	O
by	O
Namco	O
Bandai	O
Games	O
and	O
Xseed	O
Games	O
in	O
North	O
America	O
.	O
</s>
<s>
A	O
sequel	O
,	O
Retro	B-Application
Game	I-Application
Challenge	I-Application
2	I-Application
,	O
was	O
released	O
in	O
Japan	O
on	O
February	O
26	O
,	O
2009	O
and	O
was	O
never	O
officially	O
localized	O
into	O
English	O
by	O
Xseed	O
,	O
but	O
received	O
a	O
fan	O
translation	O
.	O
</s>
<s>
For	O
example	O
,	O
the	O
bonus	O
character	O
in	O
the	O
second	O
half	O
of	O
stage	O
1	O
of	O
"	O
Star	B-Application
Prince	I-Application
"	O
is	O
taken	O
from	O
his	O
attempt	O
to	O
get	O
bonus	O
points	O
from	O
playing	O
Star	B-Application
Force	I-Application
in	O
season	O
1	O
.	O
</s>
<s>
Even	O
the	O
ending	O
to	O
the	O
game	O
pulls	O
a	O
trick	O
from	O
Takeshi	B-Application
no	I-Application
Chōsenjō	I-Application
from	O
season	O
1	O
.	O
</s>
<s>
As	O
of	O
June	O
2009	O
,	O
Retro	B-Application
Game	I-Application
Challenge	I-Application
had	O
sold	O
fewer	O
than	O
100,000	O
copies	O
in	O
North	O
America	O
.	O
</s>
<s>
GameCenter	O
CX	O
:	O
Arino	O
no	O
Chōsenjō	O
2	O
is	O
the	O
sequel	O
to	O
Retro	B-Application
Game	I-Application
Challenge	I-Application
and	O
was	O
released	O
on	O
February	O
26	O
,	O
2009	O
,	O
in	O
Japan	O
.	O
</s>
<s>
This	O
game	O
also	O
features	O
games	O
styled	O
after	O
Super	B-Application
NES	I-Application
,	O
Game	B-Device
Boy	I-Device
,	O
Game	B-Device
Boy	I-Device
Color	I-Device
,	O
and	O
Famicom	B-Device
Disk	I-Device
System	I-Device
games	O
,	O
as	O
well	O
as	O
variants	O
on	O
games	O
included	O
in	O
Retro	B-Application
Game	I-Application
Challenge	I-Application
and	O
a	O
"	O
game	O
trainer	O
"	O
modeled	O
after	O
a	O
Game	B-Device
&	I-Device
Watch	I-Device
.	O
</s>
<s>
Another	O
sequel	O
of	O
the	O
game	O
,	O
named	O
GameCenter	O
CX	O
:	O
3-Choume	O
no	O
Arino	O
,	O
was	O
released	O
for	O
the	O
Nintendo	B-Operating_System
3DS	I-Operating_System
in	O
2014	O
,	O
exclusively	O
in	O
Japan	O
.	O
</s>
