<s>
SpyParty	B-Operating_System
is	O
a	O
stealth	O
video	O
game	O
developed	O
by	O
Chris	O
Hecker	O
.	O
</s>
<s>
SpyParty	B-Operating_System
was	O
first	O
shown	O
at	O
the	O
Experimental	O
Gameplay	O
Workshop	O
at	O
the	O
2009	O
Game	O
Developers	O
Conference	O
.	O
</s>
<s>
A	O
round	O
of	O
SpyParty	B-Operating_System
is	O
played	O
between	O
two	O
players	O
,	O
one	O
of	O
whom	O
is	O
designated	O
"	O
the	O
spy	O
"	O
while	O
the	O
other	O
is	O
designated	O
"	O
the	O
sniper	B-Protocol
"	O
.	O
</s>
<s>
The	O
sniper	B-Protocol
,	O
who	O
is	O
viewing	O
the	O
party	O
from	O
the	O
outside	O
and	O
does	O
not	O
know	O
which	O
avatar	O
is	O
the	O
spy	O
,	O
must	O
observe	O
all	O
of	O
the	O
characters	O
to	O
deduce	O
which	O
one	O
it	O
is	O
.	O
</s>
<s>
The	O
sniper	B-Protocol
wins	O
the	O
round	O
if	O
they	O
identify	O
the	O
spy	O
and	O
shoot	O
them	O
or	O
if	O
the	O
spy	O
runs	O
out	O
of	O
time	O
without	O
finishing	O
their	O
missions	O
.	O
</s>
<s>
The	O
spy	O
wins	O
the	O
round	O
if	O
they	O
complete	O
all	O
of	O
their	O
missions	O
or	O
if	O
the	O
sniper	B-Protocol
shoots	O
any	O
character	O
other	O
than	O
the	O
spy	O
.	O
</s>
<s>
Hecker	O
has	O
stated	O
that	O
there	O
will	O
be	O
modes	O
beyond	O
the	O
current	O
two-player	O
Spy	O
vs.	O
Sniper	B-Protocol
game	O
in	O
the	O
future	O
once	O
the	O
core	O
game	O
design	O
is	O
complete	O
.	O
</s>
<s>
Development	O
of	O
SpyParty	B-Operating_System
began	O
in	O
2009	O
.	O
</s>
<s>
To	O
help	O
with	O
the	O
illustrations	O
in	O
the	O
game	O
,	O
John	O
Cimino	O
joined	O
the	O
SpyParty	B-Operating_System
team	O
in	O
September	O
2011	O
and	O
the	O
updated	O
artwork	O
was	O
revealed	O
to	O
the	O
public	O
the	O
following	O
year	O
on	O
SpyPartys	O
official	O
website	O
.	O
</s>
<s>
In	O
late	O
2017	O
,	O
the	O
developer	O
announced	O
that	O
an	O
early	O
access	O
release	O
on	O
Steam	B-Application
was	O
coming	O
in	O
early	O
2018	O
.	O
</s>
<s>
He	O
later	O
announced	O
that	O
the	O
game	O
early	O
access	O
would	O
be	O
available	O
on	O
Steam	B-Application
on	O
April	O
12	O
.	O
</s>
