<s>
Cryostasis	B-Application
:	I-Application
Sleep	I-Application
of	I-Application
Reason	I-Application
(	O
)	O
is	O
a	O
psychological	O
horror	O
video	O
game	O
developed	O
by	O
Action	O
Forms	O
for	O
Microsoft	B-Application
Windows	I-Application
.	O
</s>
<s>
The	O
game	O
is	O
the	O
first	O
to	O
make	O
use	O
of	O
Nvidia	B-Operating_System
PhysX	I-Operating_System
real-time	O
water	O
physics	O
as	O
displayed	O
in	O
a	O
tech	O
demo	O
of	O
the	O
game	O
engine	O
.	O
</s>
