<s>
is	O
a	O
video	O
game	O
produced	O
by	O
HAL	O
Laboratory	O
in	O
1984	O
for	O
the	O
MSX	B-Operating_System
.	O
</s>
<s>
It	O
is	O
an	O
emulation	O
of	O
a	O
pinball	B-Device
machine	O
.	O
</s>
<s>
The	O
pinball	B-Device
machine	O
rendered	O
in	O
Rollerball	B-Application
is	O
composed	O
of	O
four	O
screens	O
,	O
which	O
,	O
by	O
proportion	O
,	O
would	O
be	O
about	O
as	O
long	O
as	O
two	O
standard	O
pinball	B-Device
tables	O
if	O
it	O
were	O
a	O
real	O
table	O
.	O
</s>
