<s>
Duke	B-Application
Nukem	I-Application
:	I-Application
Critical	I-Application
Mass	I-Application
is	O
a	O
shooter	O
game	O
developed	O
by	O
Frontline	O
Studios	O
and	O
published	O
by	O
Deep	O
Silver	O
and	O
Apogee	O
Software	O
,	O
LLC	O
for	O
the	O
Nintendo	B-Device
DS	I-Device
.	O
</s>
<s>
A	O
version	O
for	O
the	O
PlayStation	B-Operating_System
Portable	I-Operating_System
began	O
development	O
,	O
however	O
was	O
never	O
released	O
.	O
</s>
<s>
Knowing	O
something	O
is	O
wrong	O
,	O
General	O
Graves	O
sends	O
in	O
the	O
famous	O
Duke	B-Application
Nukem	I-Application
.	O
</s>
<s>
Duke	B-Application
Nukem	I-Application
:	I-Application
Critical	I-Application
Mass	I-Application
is	O
largely	O
a	O
run	O
and	O
gun	O
shooter	O
game	O
,	O
however	O
,	O
several	O
different	O
game	O
modes	O
are	O
available	O
throughout	O
the	O
game	O
.	O
</s>
<s>
In	O
July	O
of	O
2008	O
,	O
license	O
holder	O
Apogee	O
Software	O
,	O
LLC	O
released	O
a	O
four-minute	O
teaser	O
trailer	O
at	O
E3	O
2008	O
for	O
a	O
planned	O
Duke	B-Application
Nukem	I-Application
Trilogy	I-Application
for	O
the	O
PlayStation	B-Operating_System
Portable	I-Operating_System
(	O
PSP	B-Operating_System
)	O
and	O
Nintendo	B-Device
DS	I-Device
.	O
</s>
<s>
Duke	O
was	O
seen	O
running	O
around	O
a	O
city	O
landscape	O
from	O
a	O
third-person	O
perspective	O
in	O
the	O
PSP	B-Operating_System
version	O
of	O
the	O
game	O
,	O
and	O
platforming	O
through	O
an	O
environment	O
while	O
confined	O
to	O
a	O
side-scroller	O
style	O
path	O
on	O
the	O
DS	B-Device
version	O
.	O
</s>
<s>
This	O
event	O
was	O
followed	O
by	O
several	O
updates	O
about	O
the	O
game	O
's	O
progress	O
by	O
Apogee	O
on	O
Twitter	B-Application
during	O
the	O
following	O
months	O
,	O
including	O
one	O
in	O
which	O
the	O
voice	O
recording	O
sessions	O
for	O
the	O
game	O
with	O
Duke	B-Application
Nukem	I-Application
voice	O
actor	O
Jon	O
St.	O
John	O
were	O
confirmed	O
to	O
have	O
finished	O
successfully	O
.	O
</s>
<s>
The	O
games	O
announced	O
to	O
be	O
included	O
in	O
the	O
trilogy	O
are	O
Duke	B-Application
Nukem	I-Application
:	I-Application
Critical	I-Application
Mass	I-Application
,	O
Duke	B-Application
Nukem	I-Application
:	O
Chain	O
Reaction	O
,	O
and	O
Duke	B-Application
Nukem	I-Application
:	O
Proving	O
Grounds	O
.	O
</s>
<s>
For	O
Duke	B-Application
Nukem	I-Application
:	I-Application
Critical	I-Application
Mass	I-Application
,	O
the	O
DS	B-Device
and	O
PSP	B-Operating_System
versions	O
were	O
going	O
to	O
be	O
unique	O
games	O
unified	O
by	O
the	O
same	O
basic	O
story	O
.	O
</s>
<s>
On	O
October	O
29	O
,	O
2010	O
,	O
developer	O
Frontline	O
Studios	O
released	O
news	O
that	O
Critical	O
Mass	O
for	O
both	O
platforms	O
would	O
no	O
longer	O
carry	O
the	O
Duke	B-Application
Nukem	I-Application
license	O
and	O
be	O
renamed	O
"	O
Extraction	B-Application
Point	I-Application
:	I-Application
Alien	I-Application
Shootout	I-Application
"	O
.	O
</s>
<s>
However	O
,	O
on	O
March	O
23	O
,	O
2011	O
,	O
Apogee	O
Software	O
announced	O
that	O
they	O
never	O
lost	O
the	O
license	O
and	O
would	O
release	O
Duke	B-Application
Nukem	I-Application
:	I-Application
Critical	I-Application
Mass	I-Application
for	O
the	O
Nintendo	B-Device
DS	I-Device
on	O
April	O
8	O
,	O
2011	O
in	O
Europe	O
.	O
</s>
<s>
The	O
PSP	B-Operating_System
version	O
of	O
Critical	O
Mass	O
,	O
and	O
the	O
two	O
sequels	O
were	O
not	O
released	O
.	O
</s>
<s>
The	O
source	O
code	O
of	O
the	O
unreleased	O
PSP	B-Operating_System
version	O
of	O
Critical	O
Mass	O
was	O
discovered	O
in	O
2014	O
to	O
be	O
preserved	O
at	O
the	O
Library	O
of	O
Congress	O
.	O
</s>
<s>
Duke	B-Application
Nukem	I-Application
:	I-Application
Critical	I-Application
Mass	I-Application
received	O
"	O
generally	O
unfavorable	O
"	O
reviews	O
,	O
according	O
to	O
review	B-Application
aggregator	I-Application
Metacritic	O
.	O
</s>
