Magnant is a charming little indie real-time strategy game in which you control a colony of intelligent, technologically sophisticated ants waging battle against other ant colonies and the evil bees and beetles. It has all the usual RTS tropes--resource extraction, building construction, and real-time combat--as well as a pretty cool version of online play.
It has one innovative and unique aspect, too; virtual "cards" let you build special units or buildings. They're earned through play, and as with a trading card game (like Magic: The Gathering), you never know what cards your opponents will deploy when you play online--which creates a greater degree of variety. Your carefully-planned strategy may be upended or need to adapt quickly when an opponent deploys a special unit you hadn't anticipated.