<s>
Gerbil	B-Application
Physics	I-Application
is	O
a	O
mobile	B-Application
video	O
game	O
created	O
as	O
a	O
demo	O
as	O
an	O
Xbox	B-Device
Indie	I-Device
Game	I-Device
in	O
2009	O
by	O
British	O
studio	O
Pencel	O
Games	O
and	O
released	O
fully	O
in	O
app	O
stores	O
officially	O
on	O
March	O
14	O
,	O
2012	O
.	O
</s>
<s>
A	O
sequel	O
titled	O
Gerbil	B-Application
Physics	I-Application
2	O
was	O
released	O
for	O
Xbox	B-Operating_System
360	I-Operating_System
on	O
May	O
17	O
,	O
2010	O
.	O
</s>
<s>
The	O
game	O
was	O
coded	O
in	O
the	O
C#	B-Application
language	O
.	O
</s>
<s>
The	O
audio	O
was	O
composed	O
using	O
the	O
Audacity	B-Language
tool	I-Language
.	O
</s>
<s>
The	O
game	O
had	O
to	O
be	O
rewritten	O
in	O
order	O
to	O
cater	O
for	O
the	O
mobile	B-Application
platforms	O
.	O
</s>
<s>
PC	O
Magazine	O
rated	O
it	O
as	O
one	O
of	O
30	O
"	O
Best	O
Windows	B-Protocol
Phone	I-Protocol
Games	O
"	O
.	O
</s>
