Fieldrunners 2, Subatomic's classic tower defence game, is free right now on iPad and iPhone
Silver Award-winning tower defence classic Fieldrunners 2 is free right now on the App Store. So if you've yet to grab the impressive mobile strategy title, now's your perfect chance.
The game is all about keeping waves of bad guys away from your base. But it's a little more free-form than your average tower defence title, giving you more leeway to create your own routes and cul-de-sacs with guns and flame throwers.
At review we said "Fieldrunners 2 holds its own, giving you loads of content and delivering it with style and polish."