Falling enemies descend into four columns. The player manipulates the column positions and uses Yoshi egg halves to enclose groups of enemies; completing an egg clears the enclosed pieces and prevents the stacks from reaching the top.

The main one-player game continues through rounds with increasing pressure. A two-player mode allows two linked Game Boys to compete, with successful clears affecting the opponent's play area. The objective in both modes is to survive longer or defeat the opposing player by managing the falling pieces efficiently.

Keep the four columns at similar heights so that one dangerous stack does not become impossible to manage. Prioritize completing egg combinations before the upper sections fill, and avoid making unnecessary moves that leave isolated enemies trapped beneath mismatched pieces.

In two-player play, quick clears are valuable because they can send additional pressure to the opponent. Plan around the next available egg half instead of reacting only to the lowest piece.