<s>
Killerball	B-Application
is	O
a	O
video	O
game	O
about	O
a	O
futuristic	O
sport	O
published	O
by	O
Microïds	O
in	O
1989	B-Application
which	O
blends	O
American	O
football	O
with	O
roller-skating	O
,	O
similar	O
to	O
the	O
1975	O
film	O
Rollerball	O
.	O
</s>
<s>
Killerballs	B-Application
has	O
a	O
training	O
mode	O
,	O
where	O
the	O
player	O
competes	O
against	O
another	O
player	O
or	O
the	O
computer	O
in	O
a	O
single	O
exhibition	O
game	O
,	O
and	O
a	O
league	O
mode	O
in	O
which	O
the	O
player	O
picks	O
1	O
of	O
the	O
8	O
Killerball	B-Application
teams	O
and	O
battles	O
through	O
an	O
entire	O
season	O
till	O
they	O
reach	O
the	O
championship	O
game	O
.	O
</s>
<s>
There	O
are	O
three	O
leagues	O
that	O
affect	O
the	O
rules	O
and	O
gameplay	O
of	O
Killerball	B-Application
that	O
can	O
be	O
selected	O
in	O
both	O
training	O
and	O
league	O
game	O
modes:Minor	O
league	O
:	O
There	O
are	O
no	O
inflicted	O
injuries	O
on	O
both	O
teams	O
no	O
matter	O
how	O
hard	O
the	O
players	O
hit	O
or	O
tackle	O
the	O
opposing	O
player	O
and	O
the	O
team	O
with	O
the	O
most	O
scoring	O
points	O
against	O
the	O
opposing	O
team	O
wins	O
the	O
game.Major	O
league	O
:	O
Both	O
teams	O
must	O
win	O
by	O
either	O
scoring	O
the	O
most	O
goals	O
or	O
optionally	O
injuring	O
the	O
entire	O
opposing	O
team	O
,	O
If	O
a	O
killerball	B-Application
player	O
is	O
injured	O
in	O
the	O
game	O
they	O
are	O
replaced	O
by	O
a	O
substitute	O
player	O
,	O
which	O
are	O
limited	O
.	O
</s>
