<s>
Subnautica	B-Application
is	O
an	O
action-adventure	O
game	O
developed	O
and	O
published	O
by	O
Unknown	O
Worlds	O
Entertainment	O
.	O
</s>
<s>
Subnautica	B-Application
was	O
released	O
in	O
early	O
access	O
for	O
Windows	O
in	O
December	O
2014	O
,	O
macOS	B-Application
in	O
June	O
2015	O
,	O
and	O
for	O
Xbox	B-Device
One	I-Device
in	O
May	O
2016	O
.	O
</s>
<s>
It	O
was	O
released	O
out	O
of	O
early	O
access	O
in	O
January	O
2018	O
for	O
macOS	B-Application
and	O
Windows	O
,	O
with	O
versions	O
for	O
PlayStation	B-Operating_System
4	I-Operating_System
and	O
Xbox	B-Device
One	I-Device
in	O
December	O
2018	O
.	O
</s>
<s>
The	O
Nintendo	B-Application
Switch	I-Application
,	O
PlayStation	B-Device
5	I-Device
,	O
and	O
Xbox	B-Device
Series	I-Device
X/S	I-Device
versions	O
were	O
released	O
in	O
May	O
2021	O
.	O
</s>
<s>
A	O
sequel	O
,	O
Subnautica	B-Application
:	I-Application
Below	I-Application
Zero	I-Application
,	O
was	O
released	O
May	O
14	O
,	O
2021	O
.	O
</s>
<s>
Subnautica	B-Application
is	O
a	O
survival	B-Application
action-adventure	O
game	O
set	O
in	O
an	O
open	O
world	O
environment	O
and	O
played	O
from	O
a	O
first-person	O
perspective	O
.	O
</s>
<s>
In	O
survival	B-Application
mode	O
,	O
the	O
player	O
manages	O
their	O
depleting	O
health	O
,	O
hunger	O
,	O
thirst	O
and	O
oxygen	O
.	O
</s>
<s>
In	O
freedom	O
mode	O
,	O
gameplay	O
is	O
near-identical	O
to	O
that	O
of	O
survival	B-Application
mode	O
,	O
but	O
without	O
hunger	O
and	O
thirst	O
.	O
</s>
<s>
In	O
hardcore	B-Application
mode	I-Application
,	O
gameplay	O
includes	O
permanent	B-Application
death	I-Application
.	O
</s>
<s>
The	O
game	O
supports	O
VR	O
headsets	O
,	O
such	O
as	O
the	O
HTC	O
Vive	O
and	O
the	O
Oculus	B-Device
Rift	I-Device
,	O
with	O
the	O
additional	O
input	O
of	O
a	O
keyboard	O
and	O
mouse	O
or	O
game	O
controller	O
.	O
</s>
<s>
Subnautica	B-Application
takes	O
place	O
in	O
the	O
late	O
22nd	O
century	O
,	O
in	O
a	O
spacefaring	O
future	O
.	O
</s>
<s>
Subnautica	B-Application
was	O
announced	O
by	O
Unknown	O
Worlds	O
Entertainment	O
on	O
December	O
17	O
,	O
2013	O
,	O
with	O
Charlie	O
Cleveland	O
as	O
the	O
director	O
and	O
lead	O
gameplay	O
programmer	O
,	O
and	O
Hugh	O
Jeremy	O
as	O
the	O
producer	O
.	O
</s>
<s>
Cleveland	O
was	O
heavily	O
inspired	O
by	O
Minecraft	B-Application
,	O
which	O
he	O
noted	O
"	O
transformed	O
the	O
game	O
industry	O
"	O
and	O
"	O
threw	O
away	O
all	O
traditional	O
challenge	O
oriented	O
and	O
progression	O
oriented	O
games	O
"	O
.	O
</s>
<s>
The	O
release	O
of	O
Minecraft	B-Application
overlapped	O
with	O
Unknown	O
Worlds	O
releasing	O
Natural	B-Application
Selection	I-Application
2	I-Application
.	O
</s>
<s>
Cleveland	O
did	O
not	O
initially	O
view	O
it	O
as	O
a	O
survival	B-Application
game	I-Application
but	O
as	O
an	O
exploration	O
game	O
.	O
</s>
<s>
The	O
development	O
team	O
opted	O
to	O
use	O
the	O
Unity	B-Application
engine	I-Application
rather	O
than	O
Spark	O
,	O
the	O
engine	O
used	O
for	O
the	O
company	O
's	O
previous	O
game	O
,	O
Natural	B-Application
Selection	I-Application
2	I-Application
.	O
</s>
<s>
Subnautica	B-Application
producer	O
Hugh	O
Jeremy	O
justified	O
this	O
decision	O
because	O
of	O
the	O
different	O
demands	O
that	O
the	O
game	O
places	O
on	O
the	O
engine	O
,	O
and	O
"	O
because	O
[	O
the	O
team ]	O
does	O
not	O
include	O
people	O
working	O
on	O
Spark	O
,	O
it	O
's	O
not	O
appropriate	O
for	O
Subnautica	B-Application
to	O
use	O
Spark	O
.	O
</s>
<s>
By	O
using	O
Unity	B-Application
for	O
Subnautica	B-Application
,	O
Spark	O
can	O
continue	O
to	O
develop	O
in	O
certain	O
directions	O
,	O
while	O
Subnautica	B-Application
develops	O
in	O
others	O
.	O
</s>
<s>
To	O
use	O
Spark	O
for	O
Subnautica	B-Application
would	O
be	O
like	O
trying	O
to	O
fit	O
a	O
square	O
peg	O
in	O
a	O
round	O
hole.	O
"	O
</s>
<s>
Cleveland	O
opted	O
for	O
this	O
after	O
reading	O
an	O
essay	O
by	O
Jamie	O
Cheng	O
who	O
implemented	O
similar	O
philosophies	O
into	O
his	O
game	O
Do	B-Application
n't	I-Application
Starve	I-Application
.	O
</s>
<s>
Early	O
access	O
versions	O
of	O
Subnautica	B-Application
were	O
released	O
on	O
Steam	O
Early	O
Access	O
on	O
December	O
16	O
,	O
2014	O
and	O
on	O
Xbox	B-Device
One	I-Device
Preview	O
on	O
May	O
17	O
,	O
2016	O
.	O
</s>
<s>
The	O
full	O
version	O
of	O
the	O
game	O
was	O
released	O
on	O
January	O
23	O
,	O
2018	O
,	O
for	O
macOS	B-Application
and	O
Windows	O
personal	O
computers	O
,	O
and	O
on	O
December	O
4	O
,	O
2018	O
,	O
for	O
PlayStation	B-Operating_System
4	I-Operating_System
and	O
Xbox	B-Device
One	I-Device
consoles	O
.	O
</s>
<s>
The	O
Nintendo	B-Application
Switch	I-Application
,	O
PlayStation	B-Device
5	I-Device
and	O
Xbox	B-Device
Series	I-Device
X/S	I-Device
versions	O
of	O
the	O
game	O
and	O
a	O
sequel	O
,	O
called	O
Subnautica	B-Application
:	I-Application
Below	I-Application
Zero	I-Application
,	O
were	O
released	O
on	O
May	O
14	O
,	O
2021	O
.	O
</s>
<s>
Subnautica	B-Application
received	O
positive	O
pre-release	O
reception	O
.	O
</s>
<s>
Ian	O
Birnbaum	O
of	O
PC	O
Gamer	O
described	O
Subnautica	B-Application
as	O
an	O
"	O
underwater	O
Minecraft	B-Application
"	O
,	O
remarking	O
that	O
"	O
with	O
an	O
experienced	O
developer	O
at	O
the	O
helm	O
and	O
a	O
limitless	O
variety	O
of	O
the	O
oceans	O
to	O
play	O
with	O
,	O
it	O
's	O
going	O
to	O
take	O
a	O
lot	O
for	O
Subnautica	B-Application
to	O
go	O
badly	O
wrong	O
.	O
</s>
<s>
As	O
the	O
toolbox	O
gets	O
deeper	O
and	O
the	O
shape	O
of	O
the	O
end-game	O
gets	O
set	O
,	O
Subnautica	B-Application
will	O
be	O
a	O
unique	O
example	O
of	O
the	O
ways	O
survival	B-Application
can	O
be	O
tense	O
,	O
rewarding	O
,	O
and	O
fun.	O
"	O
</s>
<s>
Marsh	O
Davies	O
of	O
Rock	O
,	O
Paper	O
,	O
Shotgun	O
praised	O
the	O
rewarding	O
nature	O
of	O
exploring	O
the	O
world	O
of	O
Subnautica	B-Application
,	O
but	O
criticized	O
the	O
"	O
arbitrariness	O
"	O
and	O
lack	O
of	O
intuition	O
in	O
some	O
of	O
the	O
in-game	O
recipes	O
.	O
</s>
<s>
At	O
launch	O
,	O
the	O
game	O
received	O
"	O
generally	O
positive	O
reviews	O
"	O
on	O
all	O
platforms	O
according	O
to	O
review	B-Application
aggregator	I-Application
Metacritic	O
.	O
</s>
<s>
Croshaw	O
listed	O
Subnautica	B-Application
as	O
his	O
second	O
favorite	O
game	O
of	O
2018	O
.	O
</s>
