Mars: Outskirts by bobfinkl uses the default Geonosis map but it looks like it has been re-shaded red to make it look like Mars. If you play on Galactic Civil War Conquest it is a Campaign mode which is very fun and worth playing through. I TAKE NO CREDIT IN MAKING THIS MAP. ALL CREDIT GOES TO BOBFINKL ALONG WITH ANYONE HE CREDITED IN HIS README.
DESCRIPTION FROM README:
--Mars: Outskirts - By Bobfinkl--
Storyline: The year is 2173, after a near World War 3 in Asia aliens begin an assault upon Earth
2174, the alien forces were wiped from Earth thanks to the United Nations now being the only nation on the planet, they launch an assault on the alien stronghold on Mars, the place where the assault on Earth originally started
Gameplay: Nearly the same as they were on my Corra map
Credits:
Macboom: Beta testing
Caedus: Beta testing
There may be more, sorry if I forgot to credit anybody
Bugs:
None that I know of
Enjoy!
Photos of Custom Units: