<s>
Raft	B-Operating_System
is	O
an	O
open	O
world	O
survival	B-Application
video	I-Application
game	I-Application
developed	O
by	O
Swedish	O
developer	O
Redbeet	O
Interactive	O
,	O
and	O
published	O
by	O
Axolot	B-Application
Games	I-Application
.	O
</s>
<s>
The	O
game	O
was	O
released	O
as	O
an	O
early	O
access	O
title	O
on	O
23	O
May	O
2018	O
on	O
Steam	B-Application
,	O
after	O
initial	O
release	O
as	O
a	O
free	O
download	B-Application
on	O
indie	O
platform	O
Itch.io	O
in	O
2016	O
.	O
</s>
<s>
After	O
a	O
world	O
is	O
created	O
,	O
the	O
player	O
starts	O
on	O
a	O
2x2	O
raft	B-Operating_System
in	O
the	O
middle	O
of	O
an	O
ocean	O
.	O
</s>
<s>
The	O
player	O
can	O
leave	O
the	O
raft	B-Operating_System
and	O
collect	O
things	O
while	O
swimming	O
,	O
but	O
must	O
be	O
careful	O
as	O
the	O
raft	B-Operating_System
is	O
always	O
moving	O
due	O
to	O
the	O
continuous	O
ocean	O
current	O
.	O
</s>
<s>
The	O
player	O
can	O
also	O
be	O
attacked	O
or	O
killed	O
by	O
sharks	B-Algorithm
that	O
are	O
always	O
swimming	O
around	O
the	O
raft	B-Operating_System
.	O
</s>
<s>
These	O
sharks	B-Algorithm
will	O
also	O
occasionally	O
attack	O
corners	O
of	O
the	O
raft	B-Operating_System
,	O
destroying	O
parts	O
of	O
it	O
.	O
</s>
<s>
Using	O
a	O
crafting	O
system	O
,	O
the	O
player	O
can	O
use	O
the	O
collected	O
materials	O
to	O
assemble	O
and	O
research	O
new	O
items	O
and	O
to	O
expand	O
and	O
improve	O
the	O
raft	B-Operating_System
.	O
</s>
<s>
These	O
can	O
be	O
used	O
control	O
and	O
guide	O
the	O
raft	B-Operating_System
,	O
increase	O
the	O
size	O
and	O
stability	O
of	O
the	O
raft	B-Operating_System
,	O
and	O
defend	O
the	O
raft	B-Operating_System
from	O
the	O
sharks	B-Algorithm
.	O
</s>
<s>
During	O
the	O
game	O
,	O
the	O
raft	B-Operating_System
may	O
pass	O
by	O
islands	O
which	O
the	O
player	O
can	O
explore	O
to	O
get	O
special	O
items	O
and	O
resources	O
.	O
</s>
<s>
The	O
notebook	B-Device
the	O
player	O
acquires	O
at	O
the	O
start	O
tracks	O
story	O
progression	O
,	O
with	O
each	O
major	O
location	O
visited	O
marked	O
with	O
separate	O
entries	O
.	O
</s>
<s>
With	O
nothing	O
but	O
a	O
simple	O
raft	B-Operating_System
,	O
the	O
Forward	O
Scout	O
sets	O
out	O
into	O
the	O
open	O
ocean	O
in	O
search	O
of	O
a	O
rumored	O
"	O
Utopia	O
"	O
where	O
it	O
is	O
said	O
there	O
is	O
still	O
dry	O
land	O
to	O
live	O
on	O
.	O
</s>
<s>
Raft	B-Operating_System
was	O
developed	O
by	O
three	O
Swedish	O
students	O
from	O
Uppsala	O
University	O
.	O
</s>
<s>
On	O
23	O
May	O
2018	O
,	O
Raft	B-Operating_System
was	O
released	O
as	O
a	O
Steam	B-Application
early	O
access	O
game	O
.	O
</s>
<s>
Raft	B-Operating_System
had	O
previously	O
been	O
distributed	O
on	O
the	O
indie	O
platform	O
Itch.io,	O
where	O
it	O
is	O
still	O
available	O
as	O
a	O
free	O
download	B-Application
for	O
Windows	O
,	O
Linux	B-Application
,	O
and	O
macOS	B-Application
.	O
</s>
<s>
The	O
Linux	B-Application
and	O
Mac	O
versions	O
were	O
discontinued	O
after	O
version	O
1.05	O
due	O
to	O
time	O
constraints	O
.	O
</s>
<s>
Two	O
weeks	O
after	O
launch	O
the	O
game	O
was	O
the	O
number	O
3	O
most	O
played	O
game	O
on	O
Steam	B-Application
and	O
had	O
sold	O
over	O
400,000	O
copies	O
.	O
</s>
<s>
Until	O
the	O
end	O
of	O
May	O
2017	O
the	O
developer	O
version	O
was	O
downloaded	B-Application
over	O
seven	O
million	O
times	O
.	O
</s>
<s>
The	O
website	O
Polygon	O
called	O
the	O
game	O
one	O
of	O
the	O
most	O
successful	O
games	O
on	O
Steam	B-Application
of	O
2018	O
and	O
praised	O
the	O
mix	O
of	O
exploring	O
,	O
collecting	O
,	O
managing	O
and	O
learning	O
.	O
</s>
<s>
The	O
game	O
gained	O
fame	O
through	O
numerous	O
Lets	O
Plays	O
on	O
the	O
YouTube	B-General_Concept
video	I-General_Concept
platform	O
,	O
among	O
other	O
events	O
.	O
</s>
<s>
The	O
developers	O
told	O
PC	O
Gamer	O
that	O
one	O
reason	O
for	O
the	O
success	O
compared	O
to	O
other	O
survival	B-Application
games	I-Application
that	O
are	O
played	O
in	O
an	O
open	O
world	O
could	O
be	O
the	O
limited	O
area	O
.	O
</s>
<s>
Due	O
to	O
the	O
sandbox	O
system	O
and	O
the	O
setting	O
on	O
the	O
open	O
sea	O
,	O
the	O
game	O
is	O
also	O
compared	O
with	O
Subnautica	B-Application
.	O
</s>
