<s>
The	O
Panther	B-Device
XL	I-Device
by	O
Mad	O
Catz	O
is	O
a	O
joystick	B-Device
and	O
trackball	B-Device
combination	O
that	O
is	O
used	O
to	O
replace	O
the	O
keyboard	B-Device
and	O
mouse	B-Device
for	O
player	O
movement	O
in	O
first-person	O
shooter	O
games	O
like	O
Quake	B-Application
and	O
Unreal	B-Application
.	O
</s>
<s>
it	O
could	O
also	O
be	O
used	O
for	O
flight	O
simulators	O
so	O
players	O
can	O
point	O
their	O
ship	O
in	O
any	O
direction	O
with	O
the	O
trackball	B-Device
.	O
</s>
<s>
Based	O
on	O
a	O
patent	O
by	O
James	O
Barnes	O
of	O
First-Person	O
Gaming	O
,	O
the	O
Panther	B-Device
XL	I-Device
used	O
technology	O
used	O
in	O
the	O
Assassin	O
3D	O
controller	O
.	O
</s>
<s>
The	O
Panther	B-Device
XL	I-Device
began	O
production	O
in	O
late	O
1996	O
and	O
was	O
produced	O
until	O
1998	O
with	O
two	O
main	O
revisions	O
in	O
hardware	O
in	O
that	O
timeframe	O
.	O
</s>
