<s>
Opsys	B-Application
is	O
an	O
educational	B-Application
adventure	O
video	O
game	O
by	O
Polish	O
studio	O
Lemon	O
Interactive	O
and	O
published	O
by	O
[hyper]media	O
limited	O
in	O
2000	O
on	O
Macintosh	O
and	O
Windows	O
.	O
</s>
<s>
Opsys	B-Application
is	O
a	O
3D	O
virtual	B-Application
reality	I-Application
game	O
with	O
Myst-like	O
graphics	O
and	O
full-motion	O
video	O
.	O
</s>
<s>
The	O
demo	O
version	O
lacked	O
some	O
gameplay	O
elements	O
and	O
only	O
allowed	O
players	O
to	O
walk	O
through	O
the	O
wardrobe	O
in	O
their	O
own	O
apartment	O
to	O
the	O
virtual	B-Application
reality	I-Application
lab	O
,	O
and	O
access	O
the	O
temple	O
VR	O
,	O
tomb	O
VR	O
and	O
theatre	O
VR	O
.	O
</s>
