<s>
Aliens	B-Application
is	O
a	O
text-only	O
clone	O
of	O
Space	B-Application
Invaders	I-Application
written	O
for	O
the	O
CP/M	B-Application
operating	I-Application
system	I-Application
and	O
made	O
to	O
be	O
operated	O
on	O
the	O
early	O
Kaypro	O
line	O
of	O
luggable	O
computers	O
.	O
</s>
<s>
Along	O
with	O
Star	B-Application
Trek	I-Application
,	O
CatChum	B-Application
,	O
and	O
Ladder	B-Application
,	O
Aliens	B-Application
was	O
one	O
of	O
the	O
games	O
that	O
came	O
with	O
the	O
early	O
Kaypro	O
computers	O
.	O
</s>
<s>
The	O
game	O
runs	O
in	O
text	O
mode	O
;	O
the	O
aliens	B-Application
are	O
made	O
of	O
letters	O
and	O
punctuation	O
marks	O
.	O
</s>
