MegaGlest is a free and open-source real time strategy (RTS) game based in a medieval fantasy world and is a fork of Glest. The game has seven different factions to choose from: Tech, Magic, Egyptians, Indians, Norsemen, Persian and Romans with the objective of building and controlling your army to destroy the opposing side.
Mac OSX 10.5 or newer
Intel Core 2 Duo powered Mac or faster
1 GB RAM
OpenGL compatible graphics
Free download at megaglest.org