<s>
Mutant	B-Application
Storm	I-Application
Empire	I-Application
is	O
a	O
multi-directional	O
shoot	O
'	O
em	O
up	O
by	O
PomPom	O
Games	O
and	O
the	O
sequel	O
to	O
Mutant	B-Application
Storm	I-Application
Reloaded	I-Application
released	O
for	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
's	O
Xbox	B-Device
Live	I-Device
Arcade	I-Device
service	O
.	O
</s>
<s>
Mutant	B-Application
Storm	I-Application
Empire	I-Application
improves	O
on	O
the	O
original	O
Xbox	B-Operating_System
360	I-Operating_System
incarnation	O
by	O
creating	O
a	O
seamless	O
world	O
that	O
lets	O
the	O
user	O
travel	O
from	O
room	O
to	O
room	O
without	O
having	O
to	O
enter	O
a	O
loading	O
screen	O
.	O
</s>
<s>
The	O
game	O
also	O
features	O
online	O
multiplayer	O
through	O
Xbox	B-Application
Live	I-Application
.	O
</s>
<s>
The	O
game	O
features	O
a	O
two-player	O
cooperative	O
mode	O
that	O
is	O
playable	O
locally	O
and	O
on	O
Xbox	B-Application
Live	I-Application
.	O
</s>
<s>
Mutant	B-Application
Storm	I-Application
Empire	I-Application
received	O
mixed	O
to	O
positive	O
reviews	O
from	O
critics	O
upon	O
release	O
.	O
</s>
