<s>
Underground	B-Application
Development	I-Application
,	O
Ltd	O
.	O
(	O
formerly	O
Z-Axis	B-Application
,	I-Application
Ltd	I-Application
.	I-Application
)	O
was	O
an	O
American	O
video	O
game	O
developer	O
based	O
in	O
Foster	O
City	O
,	O
California	O
.	O
</s>
<s>
Following	O
a	O
rebranding	O
to	O
Underground	B-Application
Development	I-Application
in	O
February	O
2008	O
,	O
the	O
company	O
was	O
closed	O
in	O
February	O
2010	O
.	O
</s>
<s>
Z-Axis	B-Application
was	O
founded	O
by	O
David	O
Luntz	O
in	O
1994	O
,	O
originally	O
located	O
in	O
San	O
Mateo	O
,	O
California	O
.	O
</s>
<s>
On	O
May	O
22	O
,	O
2002	O
,	O
Activision	O
announced	O
that	O
they	O
had	O
acquired	O
Z-Axis	B-Application
in	O
exchange	O
for	O
a	O
payment	O
of	O
in	O
cash	O
and	O
stock	O
,	O
and	O
up	O
to	O
93,446	O
additional	O
shares	O
in	O
Activision	O
linked	O
to	O
the	O
studio	O
's	O
performance	O
.	O
</s>
<s>
In	O
February	O
2008	O
,	O
Z-Axis	B-Application
was	O
rebranded	O
as	O
Underground	B-Application
Development	I-Application
.	O
</s>
<s>
Activision	O
reported	O
in	O
April	O
2008	O
that	O
they	O
were	O
closing	O
Underground	B-Application
Development	I-Application
,	O
which	O
had	O
the	O
time	O
had	O
under	O
45	O
employees	O
in	O
a	O
Foster	O
City	O
,	O
California	O
office	O
,	O
at	O
the	O
end	O
of	O
the	O
coming	O
May	O
.	O
</s>
