<s>
Ladder	B-Application
is	O
a	O
platform	O
game	O
similar	O
to	O
Nintendo	O
's	O
Donkey	B-Application
Kong	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>
Ladder	B-Application
was	O
written	O
by	O
Yahoo	O
Software	O
of	O
Los	O
Angeles	O
,	O
California	O
.	O
</s>
<s>
Along	O
with	O
Star	B-Application
Trek	I-Application
,	O
CatChum	B-Application
and	O
Aliens	B-Application
,	O
Ladder	B-Application
was	O
one	O
of	O
the	O
games	O
that	O
came	O
with	O
the	O
software	O
bundle	O
of	O
the	O
early	O
Kaypro	O
computers	O
.	O
</s>
<s>
The	O
floors	O
in	O
Ladder	B-Application
are	O
made	O
of	O
equal	O
signs	O
,	O
and	O
the	O
ladders	B-Application
themselves	O
are	O
made	O
of	O
capital	O
"	O
H	O
"	O
s	O
stacked	O
on	O
top	O
of	O
each	O
other	O
.	O
</s>
