Stack blocks and clear them with a corresponding character or power block. Earn bonus points for scoring combos or clearing multiple blocks. There are three different block combos: orange/brown+Knuckles, gold ring+Sonic and emeralds (any color)+Tails. The more points you score, the faster the blocks will fall. You can play this game in the Timed mode (with highscores) or Freeplay mode (unrestricted playing time).
Use the up arrow to reorder the blocks as they fall. Press the right and left arrow keys to move the blocks right or left. Use the down arrow to accelerate the rate in which the blocks drop.