<s>
Chopper	B-Application
I	I-Application
is	O
a	O
vertically	O
scrolling	O
shooter	O
arcade	B-Application
video	I-Application
game	I-Application
developed	O
by	O
SNK	O
and	O
published	O
in	O
1988	O
.	O
</s>
<s>
In	O
Japan	O
,	O
Game	O
Machine	O
listed	O
Chopper	O
I''	O
on	O
their	O
July	O
15	O
,	O
1988	O
issue	O
as	O
being	O
the	O
ninth	O
most-successful	O
table	O
arcade	B-Application
unit	O
of	O
the	O
month	O
.	O
</s>
<s>
The	O
game	O
was	O
re-released	O
for	O
the	O
PlayStation	B-Operating_System
Portable	I-Operating_System
in	O
August	O
2012	O
.	O
</s>
