<s>
The	B-Application
Hidden	I-Application
is	O
a	O
multiplayer	O
total	O
conversion	O
mod	O
for	O
the	O
popular	O
Half-Life	B-Application
2	I-Application
computer	O
game	O
.	O
</s>
<s>
The	B-Application
Hidden	I-Application
is	O
played	O
by	O
rounds	O
.	O
</s>
<s>
Each	O
round	O
,	O
a	O
player	O
is	O
selected	O
automatically	O
to	O
be	O
the	B-Application
Hidden	I-Application
,	O
usually	O
based	O
on	O
how	O
much	O
damage	O
they	O
dealt	O
to	O
the	B-Application
Hidden	I-Application
in	O
previous	O
rounds	O
.	O
</s>
<s>
All	O
the	O
other	O
players	O
play	O
as	O
the	O
IRIS	O
,	O
whose	O
goal	O
is	O
to	O
work	O
as	O
a	O
team	O
to	O
hunt	O
down	O
the	B-Application
Hidden	I-Application
and	O
contain	O
it	O
.	O
</s>
<s>
As	O
the	B-Application
Hidden	I-Application
,	O
the	O
player	O
is	O
given	O
several	O
extra	O
abilities	O
not	O
available	O
to	O
the	O
IRIS	O
;	O
The	B-Application
Hidden	I-Application
is	O
nearly	O
invisible	O
,	O
with	O
only	O
a	O
little	O
distortion	O
of	O
the	O
background	O
indicating	O
his	O
presence	O
,	O
sticking	O
to	O
walls	O
,	O
and	O
the	O
ability	O
to	O
detect	O
enemies	O
 '	O
auras	O
from	O
a	O
distance	O
.	O
</s>
<s>
In	O
Mod	O
DB	O
's	O
"	O
Mod	O
of	O
2005	O
"	O
competition	O
,	O
The	B-Application
Hidden	I-Application
won	O
the	O
Editor	O
's	O
Choice	O
award	O
for	O
the	O
best	O
multiplayer	O
,	O
and	O
in	O
2006	O
it	O
won	O
"	O
Best	O
Ambience	O
"	O
in	O
the	O
same	O
competition	O
.	O
</s>
<s>
In	O
2006	O
,	O
the	O
game	O
took	O
part	O
in	O
the	O
Independent	O
Games	O
Festival	O
,	O
where	O
it	O
got	O
to	O
the	O
finals	O
of	O
the	O
"	O
Best	O
Half-Life	B-Application
2	I-Application
Mod	O
"	O
category	O
,	O
but	O
lost	O
to	O
Dystopia	B-Application
.	O
</s>
<s>
The	O
Hidden'''s	O
asymmetrical	O
gameplay	O
was	O
described	O
by	O
bit-tech.net	O
as	O
having	O
influenced	O
the	O
2015	O
game	O
Evolve''	O
.	O
</s>
