Sonic Tetris Blox is a fun free Tetris online game, but with a different concept. The aim of the game is as same as all Tetris games: to create horizontal lines, earn points and proceed onto higher levels. But in Sonic Tetris Blox there are few additional things that will keep you interested specifically to this and no other Tetris games. Not to mention that the bonuses are with your favorite Sonic heroes. Use the arrow keys: left/ right to move left/ right up arrow to rotate and down arrow key to drop a Tetris shape. Make combos and use again arrow keys to use the bonus. Its fun to play Sonic Tetris Blox, so lets get started.