Anomaly: Warzone Earth just went live on Steam for PC and Mac. It's a reverse tower defence (or tower offense, as 11 Bit Studios calls it) in which you control a commander as he attempts to guide a convoy past numerous deadly alien towers.

I've given it a playthrough, and really enjoyed myself with it. There's a ton of polish, and the concept itself works solidly, if a little too simplistic at times. Directing your convoy via the overmap is particularly entertaining and impressive.

The price is brilliant too, with a 10% discount for the first week - although since when did $9.99 equal £8.99? Either way, definitely worth grabbing a copy, especially if you're a big fan of tower defence games.

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