<s>
Perfect	B-Application
Assassin	I-Application
is	O
a	O
point	O
and	O
click	O
adventure	O
released	O
by	O
Grolier	O
Interactive	O
for	O
Microsoft	B-Application
Windows	I-Application
and	O
the	O
Sony	B-Device
PlayStation	I-Device
in	O
1997	O
and	O
1998	O
respectively	O
.	O
</s>
<s>
The	O
game	O
's	O
titular	O
character	O
,	O
Charon	O
,	O
a	O
cyborg	B-Application
with	O
superhuman	O
abilities	O
,	O
suddenly	O
loses	B-Application
his	I-Application
memory	I-Application
during	O
one	O
of	O
his	O
most	O
important	O
missions	O
,	O
landing	O
on	O
the	O
planet	O
Kar-Naq	O
.	O
</s>
<s>
The	O
game	O
uses	O
a	O
third-person	O
perspective	O
and	O
a	O
mouse-driven	O
interface	O
despite	O
using	O
a	O
3D	O
engine	O
.	O
</s>
<s>
Perfect	B-Application
Assassin	I-Application
is	O
complemented	O
by	O
a	O
topical	O
conversation	O
system	O
that	O
lets	O
players	O
set	O
the	O
tone/mood	O
of	O
the	O
protagonist	O
.	O
</s>
