11 bit studios announces the release of Anomaly: Warzone Earth, a reverse tower defense game for Windows and OS X. The game is available through digital distribution, and the Steam edition is on sale for the first week at a 10% discount. The Anomaly - Warzone Earth Website has details on the game along with a trailer showing it in action. Here's a bit from the release announcement:

Anomaly Warzone Earth is an extraordinary mixture of action and strategy in a reversed tower defense formula. The game tasks you with saving a near-future Earth from an alien onslaught. The invaders have captured the world’s major cities, building huge turrets that destroy everything in their path. It’s up to you to lead an armor squad through the streets of cities like Baghdad and Tokyo, planning the route and strategically choosing which units to deploy in order to crush the opposition. Take control of the Commander, whose special abilities and quick thinking will be vital in supporting the squad in its mission, as you engage in fast-paced, tactical battle across story campaign and two heart-pounding Squad Assault Modes.