Four Corners [Android]

This is a minimalist-type game using only the touchscreen. The only goal is to survive as long as possible. Tap a corner to turn it green, which represents the corner you are on. When a countdown timer appears on a corner, it is counting down the time until it flashes red. If your green corner flashes red, or you move to a corner while it is flashing red, you lose and your game ends. Your score is located in the center of the screen, and represents the time survived.

Download link: https://play.google.com/store/apps/details?id=com.something.fourcorners

Update: There was a bug in 1.031r that caused the game to crash on start-up due to the fixed screen size of the game. The bug has since been patched and the new version (1.032r) should be up on Google Play within a few hours.