<s>
Oxygen	B-Application
Not	I-Application
Included	I-Application
is	O
a	O
survival	B-Application
simulation	O
video	O
game	O
developed	O
and	O
published	O
by	O
Klei	O
Entertainment	O
.	O
</s>
<s>
After	O
being	O
released	O
on	O
Steam	B-Application
's	O
early	O
access	O
since	O
February	O
2017	O
,	O
the	O
game	O
was	O
officially	O
released	O
on	O
July	O
30	O
,	O
2019	O
.	O
</s>
<s>
Oxygen	B-Application
Not	I-Application
Included	I-Application
is	O
a	O
simulation	O
survival	B-Application
game	I-Application
.	O
</s>
<s>
While	O
initial	O
areas	O
have	O
a	O
breathable	O
atmosphere	O
,	O
subsequent	O
areas	O
are	O
in	O
a	O
vacuum	B-General_Concept
or	O
lack	O
oxygen	O
,	O
requiring	O
proper	O
preparation	O
by	O
the	O
duplicants	O
before	O
they	O
explore	O
these	O
areas	O
.	O
</s>
<s>
Oxygen	B-Application
Not	I-Application
Included	I-Application
is	O
developed	O
by	O
Vancouver-based	O
indie	O
studio	O
Klei	O
Entertainment	O
.	O
</s>
<s>
It	O
was	O
also	O
revealed	O
that	O
the	O
game	O
would	O
come	O
to	O
macOS	B-Application
and	O
Linux	B-Application
.	O
</s>
<s>
Klei	O
also	O
announced	O
plans	O
to	O
make	O
downloadable	B-Protocol
content	I-Protocol
for	O
the	O
game	O
.	O
</s>
<s>
DLC	B-Protocol
has	O
since	O
been	O
added	O
,	O
such	O
as	O
the	O
free	O
Automation	O
Innovation	O
update	O
(	O
extending	O
the	O
current	O
automation	O
system	O
,	O
adding	O
equipment	O
such	O
as	O
ribbon	O
cables	O
)	O
and	O
the	O
paid	O
Spaced	O
Out	O
update	O
(	O
adding	O
a	O
radiation	O
system	O
,	O
uranium	O
refinement	O
,	O
and	O
bee	O
ranching	O
)	O
.	O
</s>
<s>
Klei	O
has	O
stated	O
that	O
there	O
will	O
be	O
no	O
more	O
DLCs	B-Protocol
for	O
Oxygen	B-Application
Not	I-Application
Included	I-Application
going	O
forward	O
,	O
opting	O
for	O
free	O
updates	O
instead	O
.	O
</s>
<s>
Klei	O
's	O
Johann	O
Seidenz	O
said	O
that	O
games	O
such	O
as	O
Dwarf	B-Application
Fortress	I-Application
,	O
Prison	B-Application
Architect	I-Application
,	O
and	O
The	B-Application
Sims	I-Application
influenced	O
the	O
design	O
of	O
Oxygen	B-Application
Not	I-Application
Included	I-Application
.	O
</s>
