<s>
The	O
J-Cart	B-Device
is	O
a	O
special	O
ROM	B-Protocol
cartridge	I-Protocol
developed	O
by	O
Codemasters	O
for	O
the	O
Sega	B-Operating_System
Genesis	I-Operating_System
console	O
.	O
</s>
<s>
It	O
held	O
not	O
only	O
the	O
game	O
data	O
but	O
also	O
came	O
with	O
two	O
additional	O
gamepad	B-Device
ports	O
.	O
</s>
<s>
This	O
effectively	O
allowed	O
four	O
players	O
to	O
play	O
simultaneously	O
without	O
any	O
extra	O
adapters	B-Device
.	O
</s>
<s>
The	O
first	O
J-Cart	B-Device
game	O
,	O
Tennis	O
All-Stars	O
,	O
was	O
released	O
in	O
early	O
1994	B-Application
.	O
</s>
<s>
Micro	B-Application
Machines	I-Application
2	I-Application
:	I-Application
Turbo	I-Application
Tournament	I-Application
also	O
allowed	O
up	O
to	O
eight	O
players	O
to	O
play	O
simultaneously	O
using	O
up	O
to	O
four	O
gamepads	B-Device
,	O
each	O
player	O
using	O
only	O
the	O
D-pad	B-Device
or	O
face	O
buttons	O
.	O
</s>
<s>
The	O
J-Cart	B-Device
came	O
relatively	O
late	O
in	O
the	O
life	O
cycle	O
of	O
the	O
console	O
.	O
</s>
<s>
Thus	O
the	O
number	O
of	O
games	O
released	O
as	O
J-Carts	B-Device
was	O
limited	O
.	O
</s>
