Yoshi (game)

Yoshi is a puzzle game featuring the titlar dinosaur. In this game, enemies from past Mario games fall and it's your job to get two of the same enemy to stack on top of one another. If the enemies are the same, they'll disappear. If they're different, they'll just stay where they are. If too many stack up, you'll lose the game. Kind of reminds you of Tetris, eh?