<s>
I/O	B-Application
is	O
a	O
Japanese	O
science	O
fiction	O
visual	O
novel	O
produced	O
by	O
Regista	O
.	O
</s>
<s>
It	O
was	O
released	O
by	O
GN	O
Software	O
for	O
the	O
PlayStation	B-Device
2	I-Device
on	O
January	O
26	O
,	O
2006	O
and	O
by	O
Asgard	O
for	O
Microsoft	B-Application
Windows	I-Application
on	O
August	O
29	O
,	O
2008	O
under	O
the	O
title	O
I/O	B-Application
Revision	I-Application
II	I-Application
.	O
</s>
<s>
I/O	B-Application
is	O
a	O
mystery	O
adventure	O
visual	O
novel	O
in	O
which	O
the	O
player	O
takes	O
the	O
role	O
of	O
one	O
of	O
four	O
characters	O
;	O
depending	O
on	O
who	O
they	O
choose	O
in	O
the	O
beginning	O
of	O
the	O
game	O
,	O
they	O
experience	O
different	O
scenarios	O
.	O
</s>
<s>
I/O	B-Application
was	O
developed	O
by	O
Regista	O
,	O
and	O
was	O
directed	O
and	O
written	O
by	O
Takumi	O
Nakazawa	O
,	O
based	O
on	O
an	O
original	O
concept	O
by	O
Nakazawa	O
and	O
Romeo	O
Tanaka	O
,	O
and	O
features	O
character	O
designs	O
by	O
Soyosoyo	O
.	O
</s>
<s>
The	O
game	O
was	O
announced	O
in	O
March	O
2005	O
,	O
and	O
originally	O
had	O
a	O
planned	O
release	O
window	O
of	O
the	O
third	O
or	O
fourth	O
quarter	O
of	O
2005	O
;	O
it	O
was	O
showcased	O
at	O
Sega	O
's	O
booth	O
at	O
Tokyo	O
Game	O
Show	O
2005	O
in	O
September	O
,	O
and	O
was	O
eventually	O
released	O
by	O
GN	O
Software	O
for	O
PlayStation	B-Device
2	I-Device
on	O
January	O
26	O
,	O
2006	O
,	O
in	O
both	O
a	O
standard	O
and	O
a	O
limited	O
edition	O
.	O
</s>
<s>
A	O
Microsoft	B-Application
Windows	I-Application
version	O
,	O
titled	O
I/O	B-Application
Revision	I-Application
II	I-Application
,	O
was	O
released	O
by	O
Asgard	O
on	O
August	O
29	O
,	O
2008	O
.	O
</s>
<s>
The	O
game	O
's	O
soundtrack	O
album	O
,	O
I/O	B-Application
Perfect	O
Audiotracks	O
,	O
and	O
the	O
drama	O
CD	O
I/O	B-Application
Overbrowse	O
Damsel	O
,	O
were	O
both	O
released	O
by	O
Five	O
Records	O
on	O
February	O
24	O
,	O
2006	O
.	O
</s>
