<s>
is	O
a	O
twin-stick	O
shoot	O
'	O
em	O
up	O
video	O
game	O
,	O
released	O
on	O
the	O
Xbox	B-Device
Live	I-Device
Arcade	I-Device
service	O
on	O
January	O
20	O
,	O
2010	O
.	O
</s>
<s>
Yosuke	O
Shiokawa	O
cited	O
Heavy	B-Operating_System
Weapon	I-Operating_System
as	O
an	O
inspiration	O
for	O
the	O
game	O
.	O
</s>
<s>
This	O
,	O
combined	O
with	O
the	O
facts	O
that	O
the	O
team	O
did	O
not	O
have	O
market	O
information	O
on	O
either	O
the	O
PlayStation	B-Device
Network	I-Device
or	O
Wiiware	O
,	O
led	O
to	O
the	O
decision	O
to	O
make	O
the	O
title	O
an	O
Xbox	B-Device
Live	I-Device
Arcade	I-Device
exclusive	O
.	O
</s>
<s>
Prior	O
to	O
its	O
release	O
,	O
Death	B-Application
By	I-Application
Cube	I-Application
was	O
set	O
up	O
for	O
demo	O
play	O
at	O
the	O
Square	O
Enix	O
booth	O
of	O
the	O
2009	O
Tokyo	O
Game	O
Show	O
,	O
where	O
several	O
reviewers	O
commented	O
on	O
the	O
game	O
as	O
being	O
exceptionally	O
bloody	O
.	O
</s>
<s>
Death	B-Application
By	I-Application
Cube	I-Application
received	O
"	O
mixed	O
"	O
reviews	O
according	O
to	O
the	O
review	B-Application
aggregation	I-Application
website	O
Metacritic	O
.	O
</s>
<s>
Critics	O
took	O
issues	O
with	O
multiple	O
aspects	O
of	O
the	O
game	O
,	O
including	O
wildly	O
fluctuating	O
difficulty	O
levels	O
,	O
a	O
threadbare	O
plot	O
,	O
poor	O
visuals	O
,	O
and	O
that	O
additional	O
levels	O
had	O
to	O
be	O
unlocked	O
by	O
grinding	B-Application
through	O
the	O
initial	O
levels	O
.	O
</s>
