BEWARE! This game is highly addictive. Choose between a variety of difficulties and times. Tap the blue tiles quickly before your time runs out. Keep tapping the blue tiles to turn them red. Sometimes they will switch colors and sometimes they wont. Avoid tapping the red tiles so you dont lose points. Try to beat your high score and your friends high scores.
Not sure you are ready to buy this app yet, download the free version Tappin Blue.