<s>
Command	B-Application
HQ	I-Application
is	O
a	O
real-time	O
strategy	O
world	O
domination	O
game	O
.	O
</s>
<s>
While	O
Command	B-Application
HQ	I-Application
was	O
recognized	O
as	O
one	O
of	O
the	O
earliest	O
real-time	O
strategy	O
games	O
for	O
the	O
PC	O
,	O
it	O
was	O
preceded	O
by	O
the	B-Device
Ancient	I-Device
Art	I-Device
of	I-Device
War	I-Device
and	O
other	O
trailblazers	O
.	O
</s>
<s>
Unlike	O
these	O
games	O
it	O
has	O
elements	O
of	O
unit	O
production	O
and	O
resource	O
use	O
that	O
would	O
later	O
be	O
expanded	O
in	O
games	O
like	O
Dune	B-Application
II	I-Application
and	O
Command	B-Application
and	I-Application
Conquer	I-Application
.	O
</s>
<s>
Another	O
innovation	O
was	O
for	O
two	O
players	O
to	O
play	O
against	O
each	O
other	O
head-to-head	O
remotely	O
via	O
serial	O
(	O
RS-232	O
)	O
cable	O
,	O
dial	O
up	O
modem	B-Application
or	O
a	O
null	O
modem	B-Application
.	O
</s>
<s>
A	O
plugin	O
for	O
IPX/SPX	B-Protocol
exists	O
.	O
</s>
<s>
A	O
Facebook	O
page	O
related	O
to	O
command	B-Application
hq	I-Application
also	O
exists	O
.	O
</s>
<s>
Command	B-Application
HQ	I-Application
sold	O
75,000	O
copies	O
by	O
June	O
1993	O
.	O
</s>
<s>
Computer	O
Gaming	O
World	O
in	O
July	O
1994	O
reported	O
a	O
rumor	O
that	O
MicroProse	O
was	O
working	O
on	O
Command	B-Application
HQ	I-Application
II	O
,	O
with	O
four-way	O
and	O
possibly	O
network	O
multiplayer	O
support	O
.	O
</s>
