<s>
Horse	B-Application
Racing	I-Application
is	O
an	O
equestrian	O
video	O
game	O
released	O
by	O
Mattel	B-Operating_System
Electronics	I-Operating_System
for	O
its	O
Intellivision	B-Operating_System
video	B-Device
game	I-Device
console	I-Device
in	O
1980	O
.	O
</s>
<s>
Although	O
primarily	O
a	O
sports	O
video	O
game	O
,	O
Horse	B-Application
Racing	I-Application
received	O
Mattel	O
's	O
"	O
Gaming	O
Network	O
"	O
branding	O
,	O
due	O
to	O
its	O
pari-mutuel	O
betting	O
on	O
horses	O
during	O
the	O
game	O
.	O
</s>
<s>
The	O
game	O
houses	O
8	O
virtual	O
Thoroughbred	O
race	O
horses	O
residing	O
in	O
the	O
fictional	O
Rainbow	O
Thoroughbred	O
Stables	O
at	O
a	O
fictional	O
western	O
Kentucky	O
race	O
track	O
called	O
Plympton	O
Downs	O
(	O
based	O
loosely	O
on	O
long-time	O
sportscaster/Intellivision	O
sales	O
personality	O
George	O
Plimpton	O
)	O
.	O
</s>
<s>
These	O
horses	O
are	O
known	O
by	O
their	O
colors	O
(	O
instead	O
of	O
their	O
post	O
position	O
numbers	O
—	O
unlike	O
in	O
regular	O
horse	B-Application
racing	I-Application
)	O
.	O
</s>
<s>
Horse	B-Application
Racing	I-Application
was	O
also	O
released	O
by	O
Sears	O
for	O
their	O
Intellivision	B-Operating_System
private-label	O
clone	O
,	O
the	O
Super	B-Operating_System
Video	I-Operating_System
Arcade	I-Operating_System
.	O
</s>
<s>
In	O
Intellivision	B-Operating_System
's	O
original	O
Horse	B-Application
Racing	I-Application
game	O
,	O
6	O
players	O
(	O
bettors	O
)	O
begin	O
each	O
of	O
the	O
10	O
races	O
on	O
the	O
simulated	O
match	O
program	O
by	O
checking	O
out	O
the	O
race	O
program	O
screen	O
;	O
4	O
horses	O
are	O
entered	O
for	O
each	O
race	O
,	O
with	O
bettors	O
starting	O
out	O
with	O
a	O
$750	O
simulated	O
bankroll	O
.	O
</s>
<s>
Horse	B-Application
Racing	I-Application
is	O
included	O
in	O
the	O
Intellivision	B-Application
Lives	I-Application
!	I-Application
</s>
