<s>
Slordax	B-Application
:	I-Application
The	I-Application
Unknown	I-Application
Enemy	I-Application
is	O
a	O
vertically	O
scrolling	O
shooter	O
developed	O
and	O
published	O
by	O
Softdisk	O
in	O
1991	O
.	O
</s>
<s>
Development	O
was	O
being	O
done	O
in	O
conjunction	O
with	O
Shadow	B-Application
Knights	I-Application
around	O
1990	O
.	O
</s>
<s>
At	O
the	O
time	O
Commander	B-Application
Keen	I-Application
in	I-Application
Invasion	I-Application
of	I-Application
the	I-Application
Vorticons	I-Application
was	O
in	O
development	O
outside	O
working	O
hours	O
with	O
Softdisk	O
.	O
</s>
