I've been playing the open beta of Spectromancer for months - even pre-release, it was a game that managed to find its way into any spare moments at the keyboard. A game of wizardly battling (yes!), it combines tactical unit placement with judicious use of clever, wildly varied powers. The strategic depth on display here is something I really urge you to investigate, and I'm honored to have it on Greenhouse. It features a full single-player campaign in addition to hotseat, LAN, and online play.
If you have something you really need to get done today, downloading the demo would be an incredibly bad move.
(CW)TB