Happy Blocks is an online HTML5 game presented by yiv.com, it's playable in browsers such as safari and chrome. You can play the game on smartphone and tablet (iPhone, iPad, Samsung, Android devices and Windows Phone). Happy Blocks is an addicting h5 puzzle game. In this game you need to use green blocks to turn these red blocks into green. These cute blocks are waiting for you, have fun! 77.48% of 123 players like the mobile game.