I of the Enemy: Ril'Cerat
I of the Enemy: Ril'Cerat is a totally free, stand alone, science fiction real-time starategy game, that is the first chapter in the "I of the Enemy" saga. The player is a Lokob (luh-kobe) officer who is in charge of his race's contingent. Major Verkkal (voice talents of Ian McNeice, famed for... Emphasis in this game has moved away from gathering, mining and building, and instead concentrates on interesting tactical problems. ... "Advanced" units acquire heavier weapons or equivalent combat advantages.
http://download.enemytechnology.com/downloads/IOERilCerat.zip - 16Mb - Download - Screenshot