<s>
geoDefense	B-Application
Swarm	I-Application
is	O
a	O
tower	B-Application
defense	I-Application
game	I-Application
by	O
American	O
studio	O
Critical	O
Thought	O
Games	O
available	O
for	O
the	O
iOS	B-Application
and	O
Windows	B-Protocol
Phone	I-Protocol
devices	O
.	O
</s>
<s>
Released	O
on	O
September	O
14	O
,	O
2009	O
,	O
it	O
is	O
a	O
sequel	O
to	O
geoDefense	B-Application
,	O
released	O
by	O
Critical	O
Thought	O
Games	O
in	O
2008	O
.	O
</s>
<s>
The	O
game	O
has	O
evolved	O
from	O
the	O
original	O
and	O
is	O
available	O
on	O
the	O
iPhone	B-Device
and	O
iPod	B-Device
Touch	I-Device
.	O
</s>
<s>
Several	O
gaming	O
sites	O
have	O
awarded	O
Geo	B-Application
Defense	I-Application
Swarm	I-Application
high	O
ratings	O
.	O
</s>
