<s>
Trenches	B-Operating_System
2	I-Operating_System
is	O
the	O
sequel	O
to	O
Trenches	B-Application
.	O
</s>
<s>
Trenches	B-Operating_System
2	I-Operating_System
,	O
like	O
Trenches	B-Application
,	O
is	O
a	O
combination	O
of	O
Tower	B-Application
Defence	I-Application
and	O
Castle	O
Attack	O
genres	O
,	O
the	O
player	O
must	O
create	O
soldiers	O
in	O
order	O
to	O
overwhelm	O
the	O
opposing	O
force	O
.	O
</s>
<s>
Unlike	O
Trenches	B-Application
,	O
the	O
game	O
has	O
five	O
countries	O
each	O
with	O
their	O
own	O
strengths	O
and	O
weaknesses	O
:	O
France	O
,	O
Germany	O
,	O
Russia	O
,	O
Britain	O
and	O
the	O
USA	O
.	O
</s>
<s>
The	O
game	O
was	O
very	O
well	O
received	O
on	O
Apple	B-Application
's	I-Application
App	I-Application
Store	I-Application
,	O
boasting	O
a	O
out	O
of	O
5	O
stars	O
.	O
</s>
<s>
The	O
game	O
uses	O
EA	O
's	O
Origin	B-Operating_System
.	O
</s>
<s>
EA	O
’s	O
distribution	O
agreement	O
with	O
the	O
game	O
’s	O
developer	O
had	O
previously	O
expired	O
,	O
but	O
as	O
of	O
February	O
28	O
,	O
2013	O
,	O
Trenches	B-Operating_System
2	I-Operating_System
was	O
re-released	O
on	O
the	O
iTunes	B-Application
app	I-Application
store	I-Application
for	O
free	O
.	O
</s>
