<s>
East	B-Application
vs.	I-Application
West	I-Application
:	I-Application
Berlin	I-Application
1948	I-Application
is	O
an	O
adventure	O
game	O
developed	O
by	O
Time	O
Warp	O
Productions	O
and	O
published	O
by	O
Rainbow	B-Application
Arts	I-Application
in	O
1989	B-Application
.	O
</s>
<s>
The	O
game	O
uses	O
an	O
audio	B-Device
cassette	I-Device
to	O
supplement	O
the	O
soundtrack	O
.	O
</s>
<s>
It	O
uses	O
a	O
top-down	O
perspective	O
that	O
gives	O
the	O
a	O
player	O
a	O
bird	B-Application
's	I-Application
eye	I-Application
view	I-Application
of	O
the	O
action	O
.	O
</s>
<s>
Berlin	B-Application
1948	I-Application
is	O
set	O
in	O
the	O
city	O
of	O
Berlin	O
during	O
the	O
Cold	B-Application
War	I-Application
.	O
</s>
<s>
Berlin	B-Application
1948	I-Application
imposes	O
a	O
time	O
limit	O
for	O
solving	O
the	O
mystery	O
and	O
finding	O
the	O
atomic	O
bomb	O
.	O
</s>
<s>
Berlin	B-Application
1948	I-Application
incorporated	O
an	O
audio	B-Device
cassette	I-Device
in	O
the	O
gameplay	O
.	O
</s>
<s>
Since	O
the	O
speech	B-Application
synthesizers	I-Application
of	O
the	O
time	O
were	O
not	O
very	O
sophisticated	O
,	O
and	O
recorded	O
sound	O
took	O
up	O
too	O
much	O
disk	O
space	O
,	O
the	O
game	O
designers	O
took	O
an	O
inventive	O
approach	O
.	O
</s>
