<s>
BioShock	B-Application
2	I-Application
is	O
a	O
first-person	O
shooter	O
video	O
game	O
developed	O
by	O
2K	O
Marin	O
and	O
published	O
by	O
2K	O
Games	O
.	O
</s>
<s>
It	O
was	O
released	O
worldwide	O
for	O
PlayStation	B-Operating_System
3	I-Operating_System
,	O
Windows	O
,	O
and	O
Xbox	B-Operating_System
360	I-Operating_System
on	O
February	O
9	O
,	O
2010	O
;	O
Feral	O
Interactive	O
released	O
an	O
OS	B-Operating_System
X	I-Operating_System
version	O
on	O
March	O
30	O
,	O
2012	O
.	O
</s>
<s>
The	O
game	O
takes	O
place	O
in	O
the	O
dystopian	O
underwater	O
city	O
of	O
Rapture	O
,	O
eight	O
years	O
after	O
the	O
events	O
of	O
BioShock	B-Application
.	O
</s>
<s>
The	O
game	O
includes	O
a	O
story-driven	O
multiplayer	O
mode	O
that	O
takes	O
place	O
before	O
the	O
events	O
of	O
BioShock	B-Application
,	O
during	O
Rapture	O
's	O
civil	O
war	O
.	O
</s>
<s>
After	O
the	O
success	O
of	O
BioShock	B-Application
,	O
2K	O
Games	O
formed	O
a	O
new	O
studio	O
,	O
2K	O
Marin	O
,	O
to	O
create	O
the	O
sequel	O
.	O
</s>
<s>
Garry	O
Schyman	O
,	O
who	O
composed	O
BioShocks	B-Application
soundtrack	O
,	O
returned	O
for	O
the	O
sequel	O
;	O
he	O
expanded	O
the	O
game	O
's	O
sonic	O
palette	O
to	O
include	O
more	O
blues	O
and	O
religious	O
music	O
to	O
parallel	O
its	O
themes	O
.	O
</s>
<s>
BioShock	B-Application
2	I-Application
received	O
positive	O
reviews	O
,	O
with	O
praise	O
directed	O
at	O
its	O
narrative	O
,	O
themes	O
,	O
art	O
style	O
,	O
characters	O
,	O
endings	O
and	O
gameplay	O
.	O
</s>
<s>
The	O
multiplayer	O
mode	O
was	O
supported	O
with	O
downloadable	B-Protocol
content	I-Protocol
,	O
and	O
a	O
single-player	O
campaign	O
expansion	O
,	O
Minerva	B-Application
's	I-Application
Den	I-Application
,	O
released	O
in	O
August	O
2010	O
.	O
</s>
<s>
While	O
its	O
review	O
average	O
was	O
worse	O
than	O
BioShock	B-Application
,	O
retrospectives	O
have	O
reevaluated	O
BioShock	B-Application
2	I-Application
as	O
a	O
worthy	O
entry	O
,	O
or	O
even	O
the	O
best	O
of	O
the	O
series	O
.	O
</s>
<s>
A	O
remastered	O
version	O
was	O
released	O
as	O
part	O
of	O
BioShock	B-Application
:	I-Application
The	I-Application
Collection	I-Application
for	O
PlayStation	B-Operating_System
4	I-Operating_System
,	O
Windows	O
,	O
Xbox	B-Device
One	I-Device
,	O
and	O
Nintendo	B-Application
Switch	I-Application
.	O
</s>
<s>
BioShock	B-Application
2	I-Application
takes	O
place	O
in	O
the	O
city	O
of	O
Rapture	O
,	O
an	O
underwater	O
metropolis	O
hidden	O
from	O
the	O
world	O
.	O
</s>
<s>
Rapture	O
descended	O
into	O
civil	O
war	O
and	O
becomes	O
a	O
crumbling	O
dystopia	B-Application
populated	O
by	O
Splicers	O
,	O
the	O
spliced	O
remains	O
of	O
the	O
citizenry	O
.	O
</s>
<s>
In	O
the	O
aftermath	O
of	O
Ryan	O
's	O
death	O
during	O
the	O
first	O
BioShock	B-Application
,	O
the	O
dissident	O
collectivist	O
Sofia	O
Lamb	O
and	O
her	O
followers	O
,	O
known	O
as	O
"	O
the	O
Rapture	O
Family	O
"	O
,	O
assume	O
control	O
of	O
the	O
city	O
.	O
</s>
<s>
BioShock	B-Application
2	I-Application
begins	O
on	O
New	O
Year	O
's	O
Eve	O
,	O
1958	O
.	O
</s>
<s>
BioShock	B-Application
2	I-Application
is	O
a	O
first-person	O
shooter	O
.	O
</s>
<s>
The	O
player	O
assumes	O
the	O
character	O
of	O
Subject	O
Delta	O
eight	O
years	O
after	O
the	O
events	O
of	O
the	O
BioShock	B-Application
.	O
</s>
<s>
Several	O
weapons	O
in	O
BioShock	B-Application
2	I-Application
are	O
unique	O
to	O
the	O
Big	O
Daddy	O
,	O
including	O
a	O
powerful	O
drill	O
and	O
a	O
rivet	O
gun	O
.	O
</s>
<s>
Unlike	O
in	O
Bioshock	B-Application
,	O
the	O
player	O
can	O
use	O
each	O
weapon	O
in	O
a	O
close-range	O
melee	O
attack	O
,	O
and	O
may	O
simultaneously	O
equip	O
a	O
weapon	O
and	O
a	O
plasmid	O
.	O
</s>
<s>
Some	O
game	O
mechanics	O
were	O
streamlined	O
from	O
BioShock	B-Application
,	O
such	O
as	O
hacking	O
into	O
security	O
systems	O
and	O
turrets	O
.	O
</s>
<s>
This	O
is	O
represented	O
by	O
a	O
lengthy	O
Pipe	B-Device
Mania	I-Device
–	O
style	O
minigame	O
in	O
BioShock	B-Application
,	O
but	O
a	O
shorter	O
timing	O
puzzle	O
in	O
BioShock	B-Application
2	I-Application
.	O
</s>
<s>
BioShock	B-Application
2	I-Application
features	O
a	O
story-driven	O
multiplayer	O
mode	O
called	O
Fall	O
of	O
Rapture	O
,	O
in	O
which	O
the	O
player	O
plays	O
one	O
of	O
Rapture	O
's	O
citizens	O
during	O
the	O
1959	O
–	O
1960	O
civil	O
war	O
.	O
</s>
<s>
The	O
mode	O
shares	O
many	O
of	O
BioShock	B-Application
weapons	O
and	O
plasmids	O
,	O
alongside	O
new	O
ones	O
such	O
as	O
a	O
chain	O
gun	O
and	O
the	O
Aero	O
Dash	O
plasmid	O
.	O
</s>
<s>
These	O
include	O
the	O
deathmatch	O
modes	O
"	O
Survival	O
of	O
the	O
Fittest	O
"	O
and	O
"	O
Civil	O
War	O
"	O
;	O
"	O
Capture	O
the	O
Sister	O
"	O
,	O
a	O
capture	B-Application
the	I-Application
flag	I-Application
mode	O
in	O
which	O
the	O
objective	O
to	O
capture	O
or	O
defend	O
is	O
a	O
Little	O
Sister	O
;	O
and	O
"	O
Turf	O
War	O
"	O
,	O
in	O
which	O
teams	O
compete	O
to	O
control	O
specific	O
areas	O
of	O
a	O
map	O
.	O
</s>
<s>
Maps	O
are	O
based	O
on	O
locations	O
from	O
Bioshock	B-Application
.	O
</s>
<s>
2K	O
Boston	O
and	O
Irrational	O
Games	O
's	O
BioShock	B-Application
was	O
released	O
to	O
critical	O
acclaim	O
and	O
strong	O
sales	O
.	O
</s>
<s>
Several	O
ex-BioShock	O
developers	O
moved	O
to	O
2K	O
Marin	O
,	O
formed	O
by	O
Take-Two	O
Interactive	O
in	O
late	O
2007	O
and	O
based	O
in	O
the	O
San	O
Francisco	O
Bay	O
Area	O
.	O
</s>
<s>
2K	O
Marin	O
began	O
work	O
on	O
BioShock	B-Application
2	I-Application
with	O
a	O
core	O
team	O
of	O
eight	O
in	O
November	O
2007	O
,	O
with	O
78	O
additional	O
personnel	O
at	O
the	O
peak	O
of	O
development	O
.	O
</s>
<s>
The	O
developers	O
were	O
given	O
three	O
mandates	O
:	O
that	O
the	O
game	O
would	O
ship	O
for	O
PlayStation	B-Operating_System
3	I-Operating_System
(	O
the	O
previous	O
game	O
was	O
Xbox	O
360-exclusive	O
at	O
launch	O
)	O
,	O
that	O
it	O
would	O
feature	O
a	O
multiplayer	O
mode	O
,	O
and	O
that	O
it	O
would	O
be	O
delivered	O
within	O
two	O
and	O
a	O
half	O
years	O
.	O
</s>
<s>
Jordan	O
Thomas	O
was	O
in	O
BioShocks	B-Application
"	O
design	O
pit	O
"	O
at	O
2K	O
Boston	O
and	O
made	O
its	O
"	O
Fort	O
Frolic	O
"	O
level	O
.	O
</s>
<s>
He	O
worked	O
alongside	O
Alyssa	O
Finley	O
,	O
who	O
became	O
executive	O
producer	O
at	O
2K	O
Marin	O
and	O
subsequently	O
hired	O
him	O
as	O
BioShock	B-Application
2s	I-Application
creative	O
director	O
.	O
</s>
<s>
Thomas	O
and	O
environmental	O
artist	O
Hogarth	O
De	O
La	O
Plante	O
agreed	O
that	O
the	O
setting	O
of	O
Rapture	O
was	O
fertile	O
for	O
new	O
ideas	O
and	O
that	O
,	O
as	O
veterans	O
of	O
Bioshock	B-Application
,	O
they	O
were	O
excited	O
to	O
add	O
never-before-seen	O
parts	O
of	O
the	O
city	O
and	O
continue	O
their	O
art	O
style	O
.	O
</s>
<s>
"	O
Any	O
idea	O
was	O
out	O
on	O
the	O
table	O
at	O
that	O
point	O
,	O
and	O
I	O
think	O
nobody	O
has	O
played	O
BioShock	B-Application
more	O
than	O
the	O
developers	O
that	O
made	O
it	O
,	O
so	O
I	O
feel	O
like	O
in	O
one	O
respect	O
we	O
are	O
a	O
pretty	O
good	O
litmus	O
test	O
for	O
whether	O
it	O
's	O
still	O
an	O
interesting	O
place	O
or	O
not	O
,	O
"	O
La	O
Plante	O
recalled	O
.	O
</s>
<s>
The	O
developers	O
decided	O
to	O
make	O
the	O
player	O
a	O
Big	O
Daddy	O
to	O
make	O
BioShock	B-Application
2	I-Application
story	O
to	O
be	O
one	O
of	O
an	O
insider	O
,	O
rather	O
than	O
that	O
of	O
a	O
stranger	O
stumbling	O
across	O
Rapture	O
as	O
in	O
BioShock	B-Application
.	O
</s>
<s>
BioShock	B-Application
2s	I-Application
developers	O
aimed	O
to	O
improve	O
less-positively	O
received	O
aspects	O
of	O
BioShock	B-Application
.	O
</s>
<s>
The	O
team	O
used	O
a	O
modified	O
version	O
of	O
the	O
Unreal	B-Operating_System
Engine	I-Operating_System
2.5	O
game	O
engine	O
,	O
which	O
was	O
familiar	O
and	O
quickened	O
development	O
,	O
but	O
outdated	O
(	O
even	O
at	O
the	O
time	O
of	O
the	O
original	O
BioShocks	B-Application
development	O
)	O
and	O
presented	O
unique	O
challenges	O
;	O
for	O
example	O
,	O
the	O
user	O
interface	O
had	O
to	O
be	O
built	O
using	O
an	O
unsupported	O
Adobe	B-Operating_System
Flash	I-Operating_System
library	O
.	O
</s>
<s>
BioShock	B-Application
2	I-Application
was	O
initially	O
intended	O
to	O
be	O
a	O
prequel-sequel	O
hybrid	O
to	O
BioShock	B-Application
,	O
with	O
playable	O
flashbacks	O
showing	O
Rapture	O
in	O
its	O
prime	O
.	O
</s>
<s>
There	O
was	O
to	O
be	O
only	O
one	O
Big	O
Sister	O
character	O
,	O
namely	O
Eleanor	O
,	O
intended	O
to	O
be	O
one	O
of	O
the	O
Little	O
Sisters	O
saved	O
at	O
the	O
end	O
of	O
Bioshock	B-Application
.	O
</s>
<s>
With	O
a	O
limited	O
development	O
window	O
,	O
Digital	O
Extremes	O
pushed	O
back	O
on	O
some	O
of	O
the	O
more	O
expansive	O
ideas	O
for	O
the	O
multiplayer	O
,	O
including	O
a	O
persistent	O
massively	B-Application
multiplayer	I-Application
format	O
,	O
in	O
favor	O
of	O
a	O
more	O
standard	O
,	O
match-based	O
player-versus-player	O
offering	O
.	O
</s>
<s>
Starting	O
with	O
the	O
recognizably	O
human	O
silhouettes	O
of	O
the	O
Splicers	O
established	O
in	O
BioShock	B-Application
,	O
the	O
artists	O
further	O
varied	O
the	O
characters	O
 '	O
forms	O
.	O
</s>
<s>
Motion	B-Application
capture	I-Application
sessions	O
inspired	O
the	O
alternately	O
awkward	O
and	O
fluid	O
motion	O
of	O
the	O
character	O
.	O
</s>
<s>
Michael	O
Kamper	O
served	O
as	O
BioShock	B-Application
2s	I-Application
audio	O
lead	O
;	O
he	O
joined	O
2K	O
Marin	O
after	O
the	O
closure	O
of	O
Electronic	O
Arts	O
Chicago	O
.	O
</s>
<s>
Kamper	O
called	O
it	O
"	O
intimidating	O
"	O
to	O
follow	O
up	O
on	O
the	O
sound	O
design	O
from	O
BioShock	B-Application
as	O
everyone	O
involved	O
was	O
a	O
big	O
fan	O
of	O
the	O
game	O
.	O
</s>
<s>
The	O
setting	O
of	O
BioShock	B-Application
2	I-Application
ten	O
years	O
after	O
the	O
first	O
game	O
established	O
the	O
sonic	O
atmosphere	O
.	O
</s>
<s>
Multiplayer	O
sounds	O
were	O
handled	O
by	O
Digital	O
Extremes	O
,	O
who	O
,	O
along	O
with	O
Kamper	O
's	O
team	O
had	O
to	O
make	O
sure	O
their	O
sounds	O
cohered	O
not	O
only	O
with	O
each	O
other	O
's	O
work	O
,	O
but	O
with	O
the	O
sounds	O
of	O
BioShock	B-Application
.	O
</s>
<s>
Garry	O
Schyman	O
reprised	O
his	O
role	O
as	O
BioShock	B-Application
2s	I-Application
composer	O
.	O
</s>
<s>
He	O
wrote	O
that	O
scoring	O
the	O
followup	O
to	O
a	O
hit	O
game	O
was	O
a	O
challenge	O
,	O
and	O
Bioshock	B-Application
soundtrack	O
's	O
praise	O
set	O
a	O
high	O
bar	O
.	O
</s>
<s>
Despite	O
facing	O
high	O
expectations	O
,	O
Schyman	O
noted	O
having	O
played	O
BioShock	B-Application
and	O
using	O
an	O
established	O
style	O
made	O
composition	O
easier	O
.	O
</s>
<s>
As	O
an	O
improvement	O
from	O
Bioshock	B-Application
,	O
more	O
audio	O
cues	O
for	O
each	O
level	O
's	O
combat	O
sequences	O
were	O
added	O
.	O
</s>
<s>
The	O
results	O
,	O
such	O
as	O
the	O
level	O
music	O
for	O
"	O
Pauper	O
's	O
Drop	O
"	O
,	O
were	O
markedly	O
different	O
from	O
the	O
original	O
Bioshock	B-Application
.	O
</s>
<s>
BioShock	B-Application
2	I-Application
makes	O
extensive	O
use	O
of	O
licensed	O
music	O
from	O
the	O
time	O
period	O
.	O
</s>
<s>
"	O
Similar	O
to	O
the	O
first	O
game	O
,	O
we	O
tried	O
really	O
hard	O
to	O
instill	O
a	O
sense	O
of	O
thematic	O
cogency	O
with	O
our	O
picks	O
that	O
the	O
message	O
that	O
is	O
coming	O
through	O
the	O
licensed	O
tracks	O
,	O
"	O
Thomas	O
said	O
,	O
adding	O
that	O
blues	O
and	O
religious	O
music	O
were	O
important	O
to	O
Bioshock	B-Application
2	I-Application
themes	O
,	O
and	O
that	O
,	O
while	O
the	O
first	O
game	O
had	O
used	O
more	O
commercial	O
pop	O
music	O
,	O
they	O
wanted	O
a	O
more	O
eclectic	O
mix	O
.	O
</s>
<s>
Music	O
from	O
BioShock	B-Application
was	O
used	O
in	O
the	O
multiplayer	O
portion	O
of	O
BioShock	B-Application
2	I-Application
to	O
help	O
connect	O
it	O
back	O
to	O
the	O
time	O
period	O
of	O
the	O
first	O
game	O
.	O
</s>
<s>
In	O
contrast	O
to	O
the	O
first	O
BioShocks	B-Application
focus	O
on	O
libertarianism	O
and	O
Ayn	O
Rand	O
's	O
philosophies	O
,	O
BioShock	B-Application
2	I-Application
focuses	O
on	O
collectivist	O
ideals	O
.	O
</s>
<s>
Professor	O
Ryan	O
Lizardi	O
draws	O
parallels	O
between	O
BioShock	B-Application
2s	I-Application
themes	O
of	O
community	O
versus	O
the	O
individual	O
,	O
the	O
extremes	O
of	O
Ryan	O
and	O
Lamb	O
's	O
philosophies	O
,	O
and	O
the	O
issues	O
of	O
McCarthyism	O
and	O
the	O
hippie	O
movement	O
that	O
occurred	O
in	O
the	O
mid-20th	O
century	O
:	O
"	O
BioShock	B-Application
2	I-Application
specifically	O
asks	O
players	O
to	O
question	O
all	O
sides	O
of	O
debates	O
when	O
extreme	O
stances	O
are	O
taken.	O
"	O
</s>
<s>
BioShock	B-Application
2	I-Application
also	O
deals	O
with	O
cults	O
of	O
personality	O
,	O
technocracy	O
,	O
moral	O
absolutism	O
,	O
fatherhood	O
,	O
class	O
war	O
,	O
equalitarianism	O
,	O
parenthood	O
,	O
childhood	O
,	O
and	O
family	O
.	O
</s>
<s>
BioShock	B-Application
2	I-Application
was	O
revealed	O
through	O
a	O
teaser	O
trailer	O
hidden	O
in	O
the	O
PlayStation	B-Operating_System
3	I-Operating_System
version	O
of	O
BioShock	B-Application
in	O
October	O
2008	O
.	O
</s>
<s>
BioShock	B-Application
2	I-Application
was	O
released	O
on	O
PlayStation	B-Operating_System
3	I-Operating_System
,	O
Windows	O
,	O
and	O
Xbox	B-Operating_System
360	I-Operating_System
on	O
February	O
9	O
,	O
2010	O
.	O
</s>
<s>
A	O
special	O
edition	O
,	O
limited	O
to	O
a	O
single	O
production	O
run	O
,	O
contains	O
the	O
game	O
along	O
with	O
three	O
posters	O
featuring	O
fictional	O
advertisements	O
from	O
Rapture	O
that	O
reveal	O
hidden	O
messages	O
under	O
a	O
black	O
light	O
,	O
the	O
orchestral	O
score	O
on	O
CD	O
,	O
the	O
orchestral	O
score	O
from	O
BioShock	B-Application
on	O
vinyl	O
,	O
and	O
a	O
hardbound	O
,	O
164-page	O
art	O
book	O
.	O
</s>
<s>
A	O
smaller	O
limited	O
edition	O
,	O
BioShock	B-Application
2	I-Application
Rapture	O
Edition	O
,	O
was	O
announced	O
on	O
December	O
2	O
,	O
2009	O
.	O
</s>
<s>
BioShock	B-Application
2	I-Application
was	O
later	O
bundled	O
with	O
BioShock	B-Application
as	O
BioShock	B-Application
:	O
Ultimate	O
Rapture	O
Edition	O
.	O
</s>
<s>
A	O
remastered	O
version	O
was	O
released	O
as	O
part	O
of	O
BioShock	B-Application
:	I-Application
The	I-Application
Collection	I-Application
for	O
PlayStation	B-Operating_System
4	I-Operating_System
,	O
Windows	O
,	O
and	O
Xbox	B-Device
One	I-Device
in	O
September	O
2016	O
,	O
as	O
well	O
as	O
a	O
standalone	O
update	O
for	O
existing	O
Windows	O
owners	O
.	O
</s>
<s>
The	O
standalone	O
remastered	O
version	O
as	O
well	O
as	O
The	O
Collection	O
was	O
released	O
for	O
the	O
Nintendo	B-Application
Switch	I-Application
on	O
May	O
29	O
,	O
2020	O
.	O
</s>
<s>
In	O
its	O
first	O
week	O
of	O
release	O
,	O
BioShock	B-Application
2	I-Application
was	O
the	O
best-selling	O
Xbox	B-Operating_System
360	I-Operating_System
game	O
in	O
the	O
UK	O
and	O
North	O
America	O
.	O
</s>
<s>
In	O
the	O
U.S.	O
,	O
NPD	O
recorded	O
it	O
as	O
the	O
top	O
selling	O
game	O
of	O
February	O
,	O
with	O
562,900	O
units	O
sold	O
on	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
and	O
190,500	O
on	O
the	O
PlayStation	B-Operating_System
3	I-Operating_System
.	O
</s>
<s>
Gamasutra	O
stated	O
a	O
possible	O
reason	O
for	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
's	O
greater	O
sales	O
was	O
the	O
original	O
BioShocks	B-Application
14-month	O
exclusivity	O
on	O
that	O
platform	O
.	O
</s>
<s>
Bioshock	B-Application
2	I-Application
held	O
the	O
first	O
and	O
second	O
positions	O
on	O
the	O
Steam	B-Application
release	O
charts	O
.	O
</s>
<s>
In	O
its	O
first	O
month	O
,	O
BioShock	B-Application
2	I-Application
was	O
number	O
1	O
in	O
sales	O
for	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
and	O
number	O
12	O
for	O
the	O
PlayStation	B-Operating_System
3	I-Operating_System
.	O
</s>
<s>
By	O
March	O
2010	O
,	O
BioShock	B-Application
2	I-Application
sold	O
3million	O
copies	O
across	O
all	O
platforms	O
,	O
close	O
to	O
the	O
original	O
BioShock	B-Application
4million	O
lifetime	O
sales	O
at	O
the	O
time	O
.	O
</s>
<s>
BioShock	B-Application
2	I-Application
was	O
supported	O
post-launch	O
with	O
patches	O
and	O
downloadable	B-Protocol
content	I-Protocol
(	O
DLC	B-Protocol
)	O
.	O
</s>
<s>
The	O
first	O
DLC	B-Protocol
,	O
the	O
Sinclair	O
Solutions	O
Test	O
Pack	O
,	O
was	O
released	O
March	O
11	O
,	O
2010	O
.	O
</s>
<s>
This	O
downloadable	B-Protocol
content	I-Protocol
was	O
released	O
on	O
consoles	O
in	O
August	O
2010	O
and	O
on	O
the	O
PC	O
in	O
March	O
2011	O
.	O
</s>
<s>
The	O
final	O
BioShock	B-Application
2	I-Application
DLC	B-Protocol
,	O
released	O
August	O
31	O
,	O
2010	O
,	O
was	O
Minerva	B-Application
's	I-Application
Den	I-Application
,	O
a	O
single-player	O
campaign	O
completely	O
separate	O
in	O
plot	O
from	O
the	O
main	O
campaign	O
.	O
</s>
<s>
The	O
player	O
assumes	O
the	O
role	O
of	O
Subject	O
Sigma	O
—	O
another	O
Alpha	O
Series	O
Big	O
Daddy	O
—	O
as	O
he	O
travels	O
through	O
Minerva	B-Application
's	I-Application
Den	I-Application
,	O
home	O
to	O
Rapture	O
's	O
central	O
computer	O
.	O
</s>
<s>
The	O
DLC	B-Protocol
was	O
released	O
for	O
PC	O
on	O
May	O
31	O
,	O
2011	O
.	O
</s>
<s>
The	O
PC	O
version	O
was	O
patched	O
in	O
October	O
2013	O
to	O
replace	O
the	O
shuttered	O
Games	B-Application
for	I-Application
Windows	I-Application
–	I-Application
Live	I-Application
Marketplace	O
with	O
Steamworks	B-Application
support	O
for	O
matchmaking	O
.	O
</s>
<s>
Minerva	B-Application
's	I-Application
Den	I-Application
was	O
released	O
for	O
free	O
for	O
players	O
who	O
owned	O
BioShock	B-Application
2	I-Application
before	O
the	O
patch	O
.	O
</s>
<s>
BioShock	B-Application
2	I-Application
received	O
positive	O
reviews	O
,	O
although	O
not	O
as	O
warm	O
as	O
that	O
of	O
its	O
predecessor	O
.	O
</s>
<s>
Reviewers	O
noted	O
BioShock	B-Application
2	I-Application
fundamental	O
similarity	O
to	O
its	O
predecessor	O
,	O
but	O
disagreed	O
on	O
whether	O
the	O
similarity	O
was	O
a	O
problem	O
.	O
</s>
<s>
PC	O
Worlds	O
Will	O
Herring	O
considered	O
Bioshock	B-Application
2	I-Application
to	O
have	O
surpassed	O
the	O
original	O
.	O
</s>
<s>
Edge	O
appreciated	O
the	O
gameplay	O
improvements	O
,	O
but	O
felt	O
that	O
rough	O
edges	O
from	O
BioShock	B-Application
remained	O
,	O
such	O
as	O
annoying	O
,	O
unengaging	O
Splicer	O
fights	O
,	O
and	O
unsatisfying	O
weapon	O
handling	O
.	O
</s>
<s>
Likewise	O
,	O
Team	O
Xbox	B-Device
considered	O
scavenging	O
for	O
supplies	O
to	O
be	O
tedious	O
and	O
called	O
for	O
various	O
quality-of-life	O
improvements	O
.	O
</s>
<s>
The	O
campaign	O
was	O
generally	O
well	O
received	O
,	O
though	O
not	O
as	O
warmly	O
as	O
BioShocks	B-Application
.	O
</s>
<s>
Computer	O
and	O
Video	O
Gamess	O
Andy	O
Robinson	O
wrote	O
that	O
the	O
game	O
drew	O
from	O
the	O
best	O
of	O
the	O
original	O
BioShocks	B-Application
levels	O
by	O
interspersing	O
narrative	O
in	O
a	O
satisfactory	O
fashion	O
.	O
</s>
<s>
Criticism	O
included	O
a	O
slow	O
start	O
to	O
the	O
story	O
and	O
excessive	O
similarity	O
with	O
the	O
original	O
—	O
Haywald	O
wrote	O
that	O
the	O
plasmid	O
progression	O
,	O
and	O
even	O
the	O
player	O
character	O
's	O
feel	O
,	O
was	O
too	O
close	O
to	O
BioShock	B-Application
.	O
</s>
<s>
Vary	O
felt	O
that	O
the	O
refinements	O
to	O
the	O
morality	O
systems	O
were	O
BioShock	B-Application
2	I-Application
biggest	O
improvement	O
;	O
"	O
BioShock	B-Application
2	I-Application
is	O
peppered	O
with	O
live-or-die	O
moral	O
quandaries	O
that	O
affect	O
the	O
game	O
throughout.	O
"	O
</s>
<s>
Retrospectives	O
have	O
reconsidered	O
BioShock	B-Application
2	I-Application
in	O
its	O
series	O
and	O
among	O
video	O
games	O
as	O
a	O
whole	O
.	O
</s>
<s>
Game	O
Developer	O
and	O
Kotaku	O
considered	O
BioShock	B-Application
2	I-Application
the	O
forerunner	O
of	O
the	O
walking	O
simulator	O
genre	O
of	O
story-focused	O
games	O
.	O
</s>
<s>
Eurogamer	O
wrote	O
that	O
,	O
whereas	O
BioShock	B-Application
was	O
a	O
story	O
about	O
a	O
city	O
,	O
BioShock	B-Application
2	I-Application
was	O
a	O
story	O
about	O
the	O
people	O
within	O
that	O
city	O
—	O
its	O
focus	O
on	O
character	O
offering	O
more	O
emotional	O
moments	O
and	O
making	O
it	O
the	O
"	O
human	O
heart	O
"	O
of	O
the	O
series	O
.	O
</s>
<s>
BioShock	B-Application
creator	O
Ken	O
Levine	O
,	O
who	O
did	O
not	O
work	O
on	O
the	O
sequel	O
,	O
praised	O
the	O
BioShock	B-Application
2	I-Application
team	O
and	O
said	O
they	O
did	O
a	O
good	O
job	O
of	O
"	O
completing	O
the	O
story	O
of	O
Rapture.	O
"	O
</s>
