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1.
An add on for Halo PC that allows you to play user created content such as multiplayer maps which give players the freedom to create new weapons, vehicles, and environments to share with the public.
"I just downloaded this map pack with 100 different maps and I'm dieing to play it on Halo Ce."
by Mik February 13, 2005
 
2.
A nerdy add-on to HALO. IMO HIV klan aimbots.
Dude Halo CE is soooooooo nerdy.
I know for real.
by Dat nigga Rashaad August 17, 2006