I am a developer. I just wrote a game COLOR TAPPY on Android for those who like to think, suitable for all ages. Game rules: Calculate the numbers so that you can choose all three colors and fill the battery within 30 seconds to win, the difficulty level will increase gradually later, playing anytime, anywhere. Link download: https://play.google.com/store/apps/details?id=com.colortappy Please download and play, everyone please review the game. If the game is good, please share to support me. Thanks everyone !!!!