Soon you will know the true meaning of power -- that is, should you decide to download Star Wars Empire at War, the latest RTS available on Steam. Developed by Petroglyph Games way back in 2006, it takes place during the events leading up to Episode IV. The Gold Pack edition on Steam even includes the Forces of Corruption expansion, which adds a host of new units, heroes and planets, as well as an expanded multiplayer suite. Sorry, Mac owners -- this one's Windows only.
Not a big Star Wars fan? No worries, because Steam is also slashing 50% off the Lucasarts Adventure Pack, a collection of four classic adventure titles: Indiana Jones and the Fate of Atlantis, Indiana Jones and the Last Crusade, LOOM and The Dig. All four of these titles are Steam Play compatible and will run on your Mac. You can get 'em for $5, only a little more than a buck a game. That's a pretty damn good deal, if you ask us.
Source - LucasArts Adventure Pack
Source - Star Wars Empire at War: Gold Pack