The game is about tapping red tiles, and make them blue. Each "cured" tile gives you a point. If you won't cure your tile on time - it dies, and the game is over. Tapping on the "healthy", blue tile also kills it, so don't do that. Sounds ridicolously simple. But as the time goes on, it's getting more and more tricky. If you're looking for more challenges, try the 5x5 and 7x7 modes.
The app provides Google+ leaderboards so you can compare your results with your friends and compete in global leaderboards.
Google Play: https://play.google.com/store/apps/d...curetheredtile
APK (Zippyshare): http://www16.zippyshare.com/v/21249065/file.html