<s>
Force	B-Application
21	I-Application
is	O
a	O
real-time	O
strategy	O
game	O
made	O
by	O
Red	O
Storm	O
Entertainment	O
.	O
</s>
<s>
It	O
was	O
released	O
in	O
1999	O
for	O
Microsoft	B-Application
Windows	I-Application
,	O
and	O
in	O
December	O
2000	O
for	O
Game	B-Device
Boy	I-Device
Color	I-Device
.	O
</s>
<s>
The	O
PC	O
version	O
received	O
mixed	O
reviews	O
according	O
to	O
the	O
review	B-Application
aggregation	I-Application
website	O
GameRankings	O
.	O
</s>
