<s>
BattlEye	B-Application
is	O
a	O
proprietary	B-Application
anti-cheat	O
software	O
system	O
which	O
protects	O
games	O
and	O
their	O
players	O
from	O
hacking	O
,	O
cheating	O
,	O
and	O
other	O
forms	O
of	O
exploits	O
while	O
playing	O
an	O
online	O
game	O
.	O
</s>
<s>
It	O
was	O
initially	O
released	O
as	O
a	O
third-party	O
anti-cheat	O
for	O
Battlefield	B-Application
Vietnam	I-Application
in	O
2004	O
and	O
has	O
since	O
been	O
officially	O
implemented	O
in	O
numerous	O
video	O
games	O
including	O
PUBG	B-Application
:	I-Application
Battlegrounds	I-Application
,	O
ARMA	B-Application
3	I-Application
,	O
and	O
DayZ	B-Application
.	O
</s>
<s>
BattlEye	B-Application
supports	O
Valve	O
Corporation	O
's	O
Proton	B-Application
compatibility	O
layer	O
and	O
is	O
usable	O
on	O
the	O
Steam	B-Device
Deck	I-Device
.	O
</s>
