<s>
was	O
a	O
mobile	O
entry	O
in	O
the	O
Metal	B-Application
Gear	I-Application
stealth	O
action	B-Application
video	I-Application
game	I-Application
series	O
.	O
</s>
<s>
The	O
game	O
was	O
confirmed	O
at	O
the	O
Metal	B-Application
Gear	I-Application
25th	O
anniversary	O
event	O
on	O
August	O
30	O
,	O
2012	O
.	O
</s>
<s>
Several	O
characters	O
and	O
mechs	O
from	O
the	O
Metal	B-Application
Gear	I-Application
series	I-Application
were	O
shown	O
.	O
</s>
<s>
A	O
promotional	O
image	O
was	O
released	O
depicting	O
characters	O
from	O
Metal	B-Application
Gear	I-Application
Solid	I-Application
3	I-Application
:	I-Application
Snake	I-Application
Eater	I-Application
,	O
Metal	B-Application
Gear	I-Application
Solid	I-Application
4	I-Application
:	I-Application
Guns	I-Application
of	I-Application
the	I-Application
Patriots	I-Application
and	O
Metal	B-Application
Gear	I-Application
Solid	I-Application
:	I-Application
Peace	I-Application
Walker	I-Application
.	O
</s>
