<s>
The	O
Retro	B-Device
Duo	I-Device
is	O
a	O
handheld	B-Application
game	I-Application
console	I-Application
developed	O
by	O
Retro-Bit	O
and	O
distributed	O
by	O
Innex	O
,	O
Inc	O
.	O
</s>
<s>
It	O
plays	O
game	B-Protocol
cartridges	I-Protocol
for	O
the	O
Nintendo	O
Entertainment	O
System	O
and	O
Super	B-Application
Nintendo	I-Application
Entertainment	I-Application
System	I-Application
.	O
</s>
<s>
S-video	O
is	O
compatible	O
when	O
playing	O
SNES	B-Application
games	O
.	O
</s>
<s>
The	O
console	O
is	O
compatible	O
with	O
official	O
and	O
third	B-Application
party	O
SNES	B-Application
controllers	O
.	O
</s>
<s>
Reviews	O
of	O
the	O
Retro	B-Device
Duo	I-Device
have	O
praised	O
its	O
compatibility	O
for	O
games	O
many	O
other	O
clone	O
consoles	O
struggle	O
with	O
(	O
due	O
to	O
hardware	O
issues	O
)	O
such	O
as	O
Castlevania	B-Application
III	I-Application
:	I-Application
Dracula	I-Application
's	I-Application
Curse	I-Application
on	O
the	O
NES	O
,	O
Star	B-Application
Fox	I-Application
on	O
the	O
SNES	B-Application
,	O
and	O
the	O
Game	B-Device
Genie	I-Device
cheat	O
cartridge	B-Protocol
.	O
</s>
<s>
The	O
Retro	B-Device
Duo	I-Device
is	O
also	O
compatible	O
with	O
the	O
Super	B-Device
Game	I-Device
Boy	I-Device
device	O
.	O
</s>
<s>
The	O
Retro	B-Device
Duo	I-Device
was	O
released	O
in	O
four	O
different	O
color	O
schemes	O
:	O
white/blue	O
,	O
silver/black	O
,	O
black/red	O
,	O
and	O
a	O
red/gold	O
limited	O
edition	O
version	O
.	O
</s>
<s>
The	O
3.0	O
release	O
fixed	O
many	O
issues	O
with	O
the	O
previous	O
2	O
versions	O
,	O
including	O
the	O
compatibility	O
with	O
Castlevania	B-Application
III	I-Application
,	O
and	O
came	O
as	O
a	O
red/blue	O
Mascot	O
edition	O
.	O
</s>
<s>
Duck	B-Application
Hunt	I-Application
(	O
NES	B-Device
Zapper	I-Device
cannot	O
be	O
plugged	O
in	O
;	O
works	O
with	O
NES	O
to	O
SNES	B-Application
adapting	O
cables	O
that	O
have	O
accessory	O
support	O
.	O
</s>
<s>
Be	O
aware	O
,	O
however	O
,	O
that	O
the	O
NES	B-Device
Zapper	I-Device
only	O
works	O
with	O
a	O
CRT	O
TV	O
set	O
.	O
)	O
</s>
<s>
Paperboy	B-Device
(	O
NTSC	O
)	O
(	O
controller	O
is	O
not	O
recognized	O
however	O
there	O
is	O
a	O
hacked	O
version	O
that	O
works	O
.	O
</s>
<s>
Most	O
or	O
all	O
the	O
PAL	O
games	O
listed	O
below	O
are	O
not	O
playable	O
on	O
a	O
real	O
NTSC	O
Super	B-Application
NES	I-Application
(	O
even	O
with	O
its	O
security	O
chip	O
disabled	O
)	O
.	O
</s>
<s>
Their	O
inclusion	O
here	O
does	O
not	O
reflect	O
incompatibilities	O
between	O
the	O
(	O
NTSC	O
)	O
Retro	B-Device
Duo	I-Device
and	O
a	O
real	O
NTSC	O
Super	B-Application
NES	I-Application
.	O
</s>
<s>
Donkey	B-Application
Kong	I-Application
Country	I-Application
3	I-Application
:	I-Application
Dixie	I-Application
Kong	I-Application
's	I-Application
Double	I-Application
Trouble	I-Application
!	I-Application
</s>
<s>
EarthBound	B-Application
(	O
NTSC	O
)	O
(	O
minor	O
incompatibility	O
.	O
</s>
<s>
Pilotwings	B-Application
(	O
PAL	O
)	O
(	O
minor	O
incompatibility	O
.	O
</s>
<s>
The	O
Retro	B-Device
Duo	I-Device
Portable	O
,	O
released	O
with	O
a	O
black	O
case	O
on	O
23	O
January	O
2012	O
,	O
and	O
later	O
with	O
a	O
red	O
case	O
on	O
25	O
September	O
2012	O
.	O
</s>
<s>
The	O
Retro	B-Device
Duo	I-Device
Portable	O
is	O
capable	O
of	O
playing	O
Super	B-Application
NES	I-Application
cartridges	B-Protocol
via	O
a	O
large	O
cartridge	B-Protocol
slot	O
in	O
the	O
back	O
.	O
</s>
<s>
The	O
Retro	B-Device
Duo	I-Device
Portable	O
also	O
supports	O
NES	O
,	O
Genesis	O
,	O
and	O
Game	O
Boy	O
games	O
with	O
an	O
appropriate	O
cartridge	B-Protocol
adapter	O
for	O
each	O
system	O
.	O
</s>
