(MD) Puyo Puyo

Puyopuyo in japanese means “jelly” and jellies are the protagonist of this game, originally made by Compile and ported to Megadrive after only 2 month from the arcade release.
Your goal is to stack jellies from same colour, after 4 are connected they will explode. If the player is able to make a chain reactions, jellies will be sent to the opponent (and viceversa, of course).
After Tetris, Puyo Puyo is undoubtedly the most famous puzzle game in Japan.