<s>
Emerald	B-Application
City	I-Application
Confidential	I-Application
is	O
a	O
2009	O
computer	O
adventure	O
game	O
conceived	O
by	O
Dave	O
Gilbert	O
,	O
developed	O
by	O
Wadjet	O
Eye	O
Games	O
,	O
and	O
published	O
through	O
PlayFirst	O
.	O
</s>
<s>
Emerald	B-Application
City	I-Application
Confidential	I-Application
is	O
a	O
third-person	O
,	O
mouse-driven	O
adventure	O
game	O
in	O
which	O
the	O
player	O
must	O
solve	O
various	O
puzzles	O
and	O
follow	O
certain	O
procedures	O
in	O
order	O
for	O
the	O
linear	O
storyline	O
to	O
proceed	O
.	O
</s>
<s>
As	O
a	O
pure	O
graphical	O
adventure	O
game	O
,	O
Emerald	B-Application
City	I-Application
Confidential	I-Application
follows	O
the	O
guidelines	O
first	O
introduced	O
by	O
LucasArts	O
:	O
it	O
is	O
impossible	O
to	O
die	O
or	O
to	O
get	O
stuck	O
at	O
any	O
moment	O
in	O
the	O
game	O
,	O
which	O
allows	O
the	O
user	O
to	O
become	O
fully	O
immersed	O
in	O
Emerald	B-Application
City	I-Application
Confidentials	I-Application
universe	O
without	O
the	O
fear	O
of	O
making	O
a	O
mistake	O
or	O
the	O
constant	O
need	O
to	O
save	O
the	O
game	O
.	O
</s>
