It's tough but very good – Biotic Blitz TD Review

I basically played most of the levels on easy to gather enough stars to then go back and start to win on hard. It's very well balanced. My only complaint is that I cannot work out how to buy the option to be able to just play it as long as I want' It lets me lose 3 lives and then either pay 99c to buy some (don't know how many) lives or wait 30 minutes. I'd be happy to just pay for the full game and stop these annoying in-game purchases.
Review by Pemple on Biotic Blitz TD.