<s>
Eliminate	B-Operating_System
Pro	I-Operating_System
was	O
a	O
first-person	O
shooter	O
developed	O
for	O
iOS	B-Application
by	O
Ngmoco	O
.	O
</s>
<s>
Eliminate	O
was	O
based	O
on	O
the	O
open-source	B-Application
Quake	B-Application
3	I-Application
engine	O
.	O
</s>
<s>
The	O
player	O
moves	O
their	O
character	O
by	O
moving	O
the	O
virtual	O
joystick	B-Device
at	O
the	O
bottom	O
left	O
of	O
the	O
screen	B-Device
,	O
while	O
double-tapping	O
and	O
holding	O
this	O
button	O
down	O
will	O
activate	O
rapid	O
fire	O
.	O
</s>
<s>
They	O
shoot	O
by	O
pressing	O
the	O
bottom	O
right	O
of	O
the	O
screen	B-Device
.	O
</s>
<s>
The	O
character	O
jumps	O
when	O
the	O
player	O
presses	O
the	O
bottom	O
of	O
the	O
screen	B-Device
.	O
</s>
<s>
The	O
player	O
can	O
switch	O
weapons	O
by	O
hitting	O
the	O
top	O
right	O
of	O
the	O
screen	B-Device
.	O
</s>
<s>
Eliminate	O
uses	O
the	O
Plus+	B-Operating_System
social	O
network	O
.	O
</s>
