Eco Punk by Nitako (the developers of Rasta Monkey) has gone on sale for FREE for today only. Before this sale, Eco Punk was $0.99. There’s also a free online version of Eco Punk, but only has one gameplay mode (the iPhone and iPod Touch version has 3 modes). I’ve played both versions (online and on the iPhone and iPod Touch) and it’s a fun game with an unique concept. I recommend that you pick this up as-soon-as-possible, but if you miss out go a head and play the free online version.

Eco Punk on the App Store.