<s>
Hover	B-Application
Force	I-Application
is	O
a	O
video	O
game	O
published	O
by	O
INTV	B-Operating_System
Corporation	I-Operating_System
for	O
the	O
Intellivision	B-Operating_System
video	O
game	O
system	O
in	O
1986	B-Application
.	O
</s>
<s>
The	O
game	O
was	O
initially	O
developed	O
by	O
Mattel	B-Operating_System
Electronics	I-Operating_System
with	O
the	O
intent	O
of	O
it	O
being	O
played	O
in	O
3-D	O
,	O
but	O
the	O
company	O
was	O
shut	O
down	O
before	O
it	O
could	O
be	O
released	O
;	O
INTV	B-Operating_System
,	O
after	O
acquiring	O
the	O
Intellivision	B-Operating_System
assets	O
from	O
Mattel	O
,	O
re-tooled	O
the	O
game	O
,	O
which	O
pits	O
players	O
against	O
a	O
terrorist	O
group	O
laying	O
siege	O
to	O
a	O
city	O
,	O
and	O
released	O
it	O
itself	O
.	O
</s>
<s>
In	O
Hover	B-Application
Force	I-Application
,	O
the	O
player	O
is	O
a	O
pilot	O
of	O
a	O
combat	O
helicopter	B-Application
.	O
</s>
<s>
The	O
helicopter	B-Application
is	O
armed	O
with	O
laser	O
cannons	O
and	O
water	O
cannons	O
,	O
both	O
with	O
a	O
limited	O
amount	O
of	O
ammunition	O
.	O
</s>
<s>
Players	O
seek	O
out	O
enemy	O
helicopters	B-Application
with	O
a	O
radar	O
screen	O
,	O
then	O
fly	O
using	O
a	O
top-down	O
perspective	O
toward	O
their	O
targets	O
.	O
</s>
<s>
The	O
terrorists	O
attack	O
with	O
a	O
number	O
of	O
different	O
helicopters	B-Application
,	O
each	O
with	O
different	O
skills	O
and	O
patterns	O
.	O
</s>
<s>
Attacks	O
on	O
the	O
player	O
's	O
helicopter	B-Application
may	O
cause	O
damage	O
to	O
certain	O
systems	O
,	O
such	O
as	O
weapons	O
or	O
the	O
engine	O
.	O
</s>
<s>
Depending	O
on	O
the	O
system	O
,	O
the	O
damage	O
can	O
either	O
make	O
operating	O
the	O
craft	O
difficult	O
or	O
cause	O
the	O
helicopter	B-Application
to	O
crash	O
,	O
ending	O
the	O
game	O
.	O
</s>
<s>
This	O
base	O
will	O
also	O
repair	O
,	O
refuel	O
and	O
re-arm	O
the	O
helicopter	B-Application
during	O
the	O
missions	O
,	O
but	O
only	O
twice	O
;	O
a	O
third	O
attempt	O
to	O
land	O
prior	O
to	O
completion	O
of	O
the	O
mission	O
counts	O
as	O
a	O
crash	O
.	O
</s>
<s>
Upon	O
completion	O
of	O
the	O
game	O
,	O
the	O
player	O
is	O
given	O
a	O
rank	O
between	O
1	O
and	O
100	O
based	O
on	O
their	O
efficiency	O
at	O
both	O
eliminating	O
enemy	O
helicopters	B-Application
and	O
keeping	O
damage	O
to	O
a	O
minimum	O
,	O
with	O
a	O
score	O
of	O
100	O
considered	O
"	O
perfect.	O
"	O
</s>
<s>
Mattel	B-Operating_System
Electronics	I-Operating_System
began	O
pursuing	O
the	O
technology	O
,	O
with	O
Hover	B-Application
Force	I-Application
,	O
then	O
marketed	O
as	O
Hover	B-Application
Force	I-Application
3-D	O
,	O
making	O
its	O
debut	O
at	O
the	O
Consumer	O
Electronics	O
Show	O
in	O
Las	O
Vegas	O
in	O
January	O
1984	O
.	O
</s>
<s>
Mattel	B-Operating_System
Electronics	I-Operating_System
had	O
developed	O
a	O
method	O
for	O
producing	O
the	O
glasses	O
at	O
low	O
cost	O
,	O
and	O
had	O
even	O
decided	O
to	O
develop	O
two	O
additional	O
3-D	O
titles	O
,	O
but	O
the	O
company	O
was	O
shut	O
down	O
before	O
the	O
plans	O
could	O
come	O
to	O
fruition	O
.	O
</s>
<s>
INTV	B-Operating_System
Corporation	I-Operating_System
,	O
which	O
acquired	O
Intellivision	B-Operating_System
's	O
assets	O
from	O
Mattel	O
,	O
re-tooled	O
the	O
game	O
and	O
dropped	O
any	O
mention	O
of	O
3-D	O
for	O
its	O
release	O
in	O
1986	B-Application
.	O
</s>
<s>
The	O
technology	O
was	O
later	O
used	O
by	O
Crayola	O
for	O
their	O
3D	O
Chalk	O
toy	O
and	O
these	O
glasses	O
can	O
be	O
used	O
to	O
experience	O
the	O
3D	O
effects	O
in	O
this	O
Intellivision	B-Operating_System
game	O
.	O
</s>
<s>
Hover	B-Application
Force	I-Application
was	O
re-released	O
as	O
part	O
of	O
the	O
Intellivision	B-Application
Lives	I-Application
!	I-Application
</s>
<s>
collection	O
for	O
computers	O
and	O
other	O
video	O
game	O
consoles	O
,	O
including	O
the	O
PlayStation	B-Device
2	I-Device
and	O
Nintendo	B-Application
GameCube	I-Application
.	O
</s>
<s>
In	O
July	O
2010	O
,	O
Microsoft	O
re-released	O
Hover	B-Application
Force	I-Application
on	O
the	O
Game	B-Device
Room	I-Device
service	O
for	O
its	O
Xbox	B-Operating_System
360	I-Operating_System
console	O
and	O
for	O
Games	B-Application
for	I-Application
Windows	I-Application
Live	I-Application
.	O
</s>
