<s>
Subsunk	B-Application
is	O
a	O
text	O
adventure	O
game	O
by	O
Firebird	O
released	O
in	O
1985	B-Application
for	O
the	O
Amstrad	B-Device
CPC	I-Device
,	O
Commodore	O
64	O
,	O
and	O
ZX	B-Operating_System
Spectrum	I-Operating_System
home	O
computers	O
.	O
</s>
<s>
The	O
game	O
was	O
produced	O
with	O
The	B-Application
Quill	I-Application
and	O
includes	O
simple	O
graphics	O
.	O
</s>
<s>
The	O
player	O
must	O
guide	O
Ed	O
Lines	O
in	O
his	O
attempt	O
to	O
escape	O
the	O
stricken	O
submarine	O
;	O
he	O
must	O
reach	O
the	O
telex	O
room	O
and	O
issue	O
the	O
distress	O
signal	O
"	O
SUBSUNK	B-Application
"	O
to	O
alert	O
the	O
authorities	O
and	O
bring	O
assistance	O
.	O
</s>
<s>
It	O
was	O
followed	O
by	O
a	O
sequel	O
,	O
Seabase	B-Device
Delta	I-Device
.	O
</s>
