Total Annihilation

[Chronos]

Total Annihilation, one of GameSpot's Greatest Games of All Time, was a 3D real-time strategy game back when real-time strategy games weren't in 3D. This was one of the RTS's I really liked back in the day, and now it's available from Stardock on Impulse for only $10. It's a true piece of RTS history, if I do say so myself.

http://www.impulsedriven.com/totalannihilation