<s>
RealSports	B-Application
Tennis	I-Application
is	O
a	O
tennis	B-Application
simulation	O
video	O
game	O
developed	O
and	O
published	O
by	O
Atari	O
,	O
Inc	O
.	O
for	O
the	O
Atari	B-General_Concept
2600	I-General_Concept
,	O
Atari	B-General_Concept
5200	I-General_Concept
and	O
Atari	B-Device
8-bit	I-Device
family	I-Device
in	O
1983	O
.	O
</s>
<s>
Before	O
the	O
game	O
starts	O
,	O
players	O
have	O
to	O
name	O
their	O
character	O
,	O
a	O
first	O
for	O
an	O
Atari	B-General_Concept
2600	I-General_Concept
game	O
,	O
and	O
choose	O
between	O
one	O
and	O
two	O
player	O
mode	O
and	O
the	O
two	O
pre-set	O
difficulty	O
levels	O
(	O
"	O
slow	O
"	O
and	O
"	O
fast	O
"	O
)	O
.	O
</s>
<s>
In	O
the	O
game	O
,	O
one	O
player	O
with	O
a	O
blue	O
shirt	O
plays	O
tennis	B-Application
against	O
an	O
AI	B-Application
enemie	O
portrayed	O
by	O
a	O
non-player	O
character	O
(	O
NPC	O
)	O
with	O
a	O
red	O
shirt	O
.	O
</s>
<s>
With	O
the	O
one	O
button	O
on	O
the	O
Atari	B-General_Concept
2600	I-General_Concept
controller	O
,	O
players	O
make	O
the	O
serve	O
.	O
</s>
<s>
The	O
2600	O
version	O
's	O
programmer	O
is	O
unknown	O
,	O
while	O
the	O
5200	O
and	O
Atari	B-Device
8-bit	I-Device
family	I-Device
versions	O
were	O
coded	O
by	O
W	O
Sean	O
Hennessy	O
.	O
</s>
<s>
Atari	O
's	O
Director	O
of	O
Software	O
George	O
Kiss	O
assigned	O
the	O
project	O
to	O
Hennessey	O
knowing	O
that	O
he	O
's	O
a	O
tennis	B-Application
fan	O
.	O
</s>
<s>
He	O
did	O
the	O
5200	O
version	O
first	O
and	O
then	O
ported	O
the	O
game	O
to	O
the	O
Atari	B-Device
8-bit	I-Device
family	I-Device
of	O
home	O
computers	O
later	O
.	O
</s>
<s>
The	O
Atari	B-General_Concept
5200	I-General_Concept
version	O
is	O
slower	O
than	O
the	O
Atari	B-General_Concept
2600	I-General_Concept
version	O
.	O
</s>
