<s>
Alien	B-Application
Shooter	I-Application
:	I-Application
Vengeance	I-Application
(	O
also	O
known	O
as	O
Alien	B-Application
Shooter	I-Application
2	I-Application
)	O
is	O
a	O
top-down	O
shooter	O
video	O
game	O
for	O
Microsoft	B-Application
Windows	I-Application
developed	O
and	O
released	O
by	O
Sigma	O
Team	O
in	O
2007	O
as	O
a	O
sequel	O
to	O
Alien	B-Application
Shooter	I-Application
.	O
</s>
<s>
A	O
remade	O
version	O
called	O
Alien	B-Application
Shooter	I-Application
2	I-Application
:	O
Reloaded	O
features	O
changed	O
game	O
mechanics	O
and	O
a	O
few	O
new	O
levels	O
.	O
</s>
<s>
Alien	B-Application
Shooter	I-Application
:	O
Vengeance'''s	O
gameplay	O
contains	O
many	O
improvements	O
over	O
its	O
predecessor	O
Alien	B-Application
Shooter	I-Application
.	O
</s>
<s>
A	O
remade	O
version	O
of	O
the	O
game	O
was	O
released	O
,	O
titled	O
Alien	B-Application
Shooter	I-Application
:	O
Reloaded	O
which	O
featured	O
the	O
addition	O
of	O
a	O
few	O
new	O
levels	O
,	O
simplified	O
role-playing	O
system	O
and	O
several	O
minor	O
gameplay	O
changes	O
.	O
</s>
<s>
In	O
place	O
it	O
adds	O
a	O
new	O
game	O
mode	O
,	O
Gun	O
Stand	O
,	O
where	O
you	O
fight	O
against	O
waves	O
of	O
enemies	O
using	O
a	O
stationary	O
Sentry	O
which	O
can	O
be	O
upgraded	O
as	O
you	O
progress	O
,	O
there	O
are	O
also	O
additional	O
levels	O
in	O
the	O
main	O
game	O
,	O
however	O
,	O
the	O
levels	O
are	O
all	O
smaller	O
than	O
in	O
Alien	B-Application
Shooter	I-Application
2	I-Application
.	O
</s>
<s>
A	O
stand-alone	O
add-on	O
was	O
released	O
in	O
2010	O
,	O
titled	O
Alien	B-Application
Shooter	I-Application
2	I-Application
:	O
Conscription	O
.	O
</s>
