<s>
is	O
a	O
1984	O
boxing	B-Application
sports	O
video	O
game	O
developed	O
and	O
published	O
by	O
Sega	O
for	O
the	O
SG-1000	B-Operating_System
,	O
and	O
later	O
ported	O
to	O
the	O
arcades	O
,	O
only	O
in	O
Japan	O
and	O
Europe	O
.	O
</s>
<s>
In	O
1985	O
,	O
a	O
successor	O
of	O
Champion	B-Application
Boxing	I-Application
titled	O
Champion	B-Application
Pro	I-Application
Wrestling	I-Application
was	O
released	O
in	O
the	O
arcades	O
,	O
and	O
ported	O
to	O
the	O
SG-1000	B-Operating_System
and	O
the	O
MSX	B-Operating_System
home	O
computer	O
the	O
same	O
year	O
.	O
</s>
<s>
However	O
,	O
this	O
is	O
a	O
professional	O
wrestling	O
game	O
instead	O
of	O
a	O
boxing	B-Application
game	O
.	O
</s>
<s>
Yu	O
Suzuki	O
described	O
Champion	B-Application
Boxing	I-Application
as	O
a	O
minor	O
project	O
with	O
very	O
little	O
staff	O
,	O
and	O
said	O
that	O
because	O
of	O
this	O
it	O
allowed	O
him	O
to	O
learn	O
the	O
process	O
of	O
games	O
development	O
with	O
very	O
little	O
pressure	O
.	O
</s>
<s>
According	O
to	O
Suzuki	O
,	O
the	O
game	O
was	O
developed	O
for	O
the	O
SG-1000	B-Operating_System
first	O
,	O
and	O
then	O
the	O
arcade	B-Application
version	O
was	O
created	O
by	O
simply	O
installing	O
an	O
SG-1000	B-Operating_System
in	O
an	O
arcade	B-Application
cabinet	O
.	O
</s>
<s>
Pengo	B-Application
makes	O
a	O
cameo	O
after	O
a	O
KO	O
.	O
</s>
