<s>
Battle	B-Application
Squadron	I-Application
is	O
a	O
vertically	O
scrolling	O
shooter	O
for	O
the	O
Amiga	B-Device
for	O
one	O
or	O
two	O
players	O
.	O
</s>
<s>
It	O
is	O
a	O
sequel	O
to	O
Hybris	B-Application
.	O
</s>
<s>
A	O
version	O
for	O
the	O
Mega	B-Operating_System
Drive	I-Operating_System
was	O
released	O
in	O
1990	O
.	O
</s>
<s>
The	O
game	O
was	O
later	O
ported	O
to	O
iOS	B-Application
devices	O
(	O
2011	O
)	O
,	O
Android	B-Application
(	O
2012	O
)	O
and	O
in	O
2013	O
also	O
to	O
AmigaOS	B-Application
4	I-Application
,	O
Windows	B-Application
,	O
OS	B-Operating_System
X	I-Operating_System
and	O
MorphOS	B-Operating_System
.	O
</s>
<s>
Battle	B-Application
Squadron	I-Application
supports	O
both	O
mouse	O
and	O
joystick	O
controlled	O
play	O
.	O
</s>
<s>
The	O
game	O
is	O
played	O
from	O
the	O
perspective	O
of	O
elite	O
fighter	O
pilots	O
of	O
the	O
Earth	O
Defense	O
Fleet	O
,	O
known	O
as	O
the	O
Battle	B-Application
Squadron	I-Application
sent	O
to	O
rescue	O
two	O
human	O
agents	O
,	O
Commanders	O
Berry	O
D	O
.	O
Mayers	O
and	O
Lori	O
Bergin	O
,	O
from	O
the	O
clutches	O
of	O
the	O
ruthless	O
alien	O
empire	O
,	O
known	O
as	O
the	O
Barrax	O
.	O
</s>
