<s>
Space	B-Application
Station	I-Application
13	I-Application
,	O
often	O
shortened	O
to	O
SS13	O
,	O
is	O
a	O
top-down	O
tile	O
based	O
action	B-Application
role-playing	I-Application
multiplayer	O
video	O
game	O
running	O
on	O
the	O
freeware	B-License
BYOND	O
game	O
engine	O
,	O
originally	O
released	O
in	O
2003	O
.	O
</s>
<s>
The	O
game	O
is	O
set	O
on	O
a	O
futuristic	O
space	O
station	O
;	O
however	O
,	O
location	O
can	O
differ	O
depending	O
on	O
the	O
game	B-Application
server	I-Application
,	O
including	O
spacecraft	O
and	O
exoplanets	O
.	O
</s>
<s>
One	O
of	O
the	O
defining	O
features	O
of	O
Space	B-Application
Station	I-Application
13	I-Application
is	O
its	O
emphasis	O
on	O
player	O
roles	O
.	O
</s>
<s>
Space	B-Application
Station	I-Application
13	I-Application
's	O
gameplay	O
is	O
based	O
on	O
the	O
content	O
,	O
settings	O
,	O
and	O
code	O
applied	O
on	O
the	O
game	B-Application
server	I-Application
.	O
</s>
<s>
Due	O
to	O
the	O
largely	O
open	O
source	O
nature	O
of	O
the	O
game	O
,	O
sessions	O
are	O
typically	O
hosted	O
on	O
user	O
maintained	O
and	O
customized	O
game	B-Application
servers	I-Application
which	O
can	O
alter	O
or	O
vary	O
the	O
gameplay	O
experience	O
.	O
</s>
<s>
Medical	O
(	O
keeping	O
the	O
crew	O
healthy	O
,	O
performing	O
most	O
surgeries	O
,	O
researching	O
diseases	O
and	O
cloning	B-Application
deceased	O
players	O
aboard	O
the	O
station	O
)	O
.	O
</s>
<s>
Synthetics/Silicons	O
(	O
consisting	O
of	O
the	O
station	O
's	O
A.I	B-Application
and	O
cyborgs	B-Application
,	O
who	O
are	O
often	O
bound	O
by	O
the	O
Three	O
Laws	O
of	O
Robotics	O
,	O
which	O
restrict	O
AI	B-Application
from	O
committing	O
illegal	O
acts	O
,	O
such	O
as	O
assaulting	O
a	O
crew	O
member	O
,	O
unless	O
someone	O
changes	O
said	O
laws	O
)	O
.	O
</s>
<s>
Antagonists	O
can	O
range	O
from	O
mostly	O
normal	O
characters	O
with	O
certain	O
malicious	O
intentions	O
,	O
rogue	O
artificial	B-Application
intelligences	I-Application
,	O
and	O
a	O
wide	O
assortment	O
of	O
monsters	O
and	O
enemies	O
,	O
such	O
as	O
changelings	O
,	O
aliens	O
,	O
Lovecraftian	O
horrors	O
,	O
assassins	O
,	O
and	O
death	O
squads	O
armed	O
with	O
nuclear	O
weapons	O
.	O
</s>
<s>
Generally	O
,	O
Space	B-Application
Station	I-Application
13	I-Application
takes	O
place	O
several	O
centuries	O
in	O
the	O
future	O
on	O
a	O
research	O
station	O
owned	O
by	O
the	O
megacorporation	O
known	O
as	O
Nanotrasen	O
.	O
</s>
<s>
There	O
are	O
several	O
different	O
types	O
of	O
servers	O
in	O
Space	B-Application
Station	I-Application
13	I-Application
,	O
each	O
with	O
its	O
own	O
focus	O
and	O
gameplay	O
style	O
.	O
</s>
<s>
Servers	O
often	O
have	O
their	O
own	O
modified	O
code	B-Application
base	I-Application
.	O
</s>
<s>
Standard	O
Station	O
:	O
These	O
servers	O
are	O
the	O
most	O
common	O
and	O
traditional	O
type	O
of	O
Space	B-Application
Station	I-Application
13	I-Application
server	O
.	O
</s>
<s>
Colonial	O
Marines	O
:	O
Colonial	O
Marines	O
is	O
a	O
popular	O
variant	O
of	O
Space	B-Application
Station	I-Application
13	I-Application
that	O
is	O
set	O
in	O
the	O
world	O
of	O
the	O
Alien	O
movie	O
franchise	O
.	O
</s>
<s>
This	O
game	O
mode	O
is	O
an	O
Asymmetrical	O
team	O
vs	O
team	O
match	O
where	O
one	O
team	O
of	O
players	O
take	O
on	O
the	O
role	O
of	O
space	B-Application
marines	I-Application
while	O
the	O
other	O
play	O
as	O
Xenomorphs	O
.	O
</s>
<s>
Colonial	O
Marines	O
is	O
a	O
unique	O
and	O
thrilling	O
game	O
mode	O
that	O
offers	O
a	O
different	O
type	O
of	O
gameplay	O
experience	O
from	O
traditional	O
Space	B-Application
Station	I-Application
13	I-Application
.	O
</s>
<s>
Space	B-Application
Station	I-Application
13	I-Application
was	O
originally	O
developed	O
as	O
an	O
atmospherics	O
simulator	O
by	O
Exadv1	O
in	O
2003	O
.	O
</s>
<s>
Its	O
closed	B-Application
source	I-Application
codebase	O
was	O
decompiled	O
in	O
2007	O
,	O
giving	O
rise	O
to	O
SS13	O
's	O
current	O
popularity	O
.	O
</s>
<s>
A	O
large	O
number	O
of	O
promising	O
community	O
efforts	O
to	O
remake	O
SS13	O
have	O
been	O
started	O
over	O
the	O
years	O
due	O
to	O
longstanding	O
frustration	O
with	O
SS13	O
's	O
closed-source	B-Application
engine	O
BYOND	O
,	O
and	O
low	O
quality	O
of	O
code	O
.	O
</s>
<s>
Space	B-Application
Station	I-Application
13	I-Application
garnered	O
attention	O
from	O
various	O
video	O
game	O
journalism	O
websites	O
over	O
the	O
years	O
.	O
</s>
<s>
The	O
game	O
served	O
as	O
a	O
direct	O
inspiration	O
for	O
the	O
role-playing	O
video	O
game	O
Barotrauma	B-Application
,	O
and	O
was	O
also	O
mentioned	O
by	O
Eurogamer	O
as	O
an	O
inspiration	O
for	O
the	O
now-cancelled	O
game	O
ION	O
by	O
DayZ	B-Application
creator	O
Dean	O
"	O
Rocket	O
"	O
Hall	O
.	O
</s>
<s>
He	O
then	O
later	O
released	O
Stationeers	O
,	O
which	O
was	O
also	O
inspired	O
by	O
Space	B-Application
Station	I-Application
13	I-Application
.	O
</s>
<s>
Rock	O
,	O
Paper	O
,	O
Shotgun	O
named	O
Space	B-Application
Station	I-Application
13	I-Application
on	O
its	O
list	O
of	O
"	O
Best	O
free	O
PC	O
games	O
"	O
in	O
2016	O
and	O
2019	O
.	O
</s>
