A platformer game for the NES, and sequel to Super Mario Bros. It featured 4 usable characters: Mario, Luigi, Princess Toadstool and Toad.
Each level in the game was preceeded by a character selection screen, which allowed you to choose which character you used during the following level. Each character had different abilities.
Mario: No weaknesses
Luigi: Highest jump
Princess: Can hover for a short time by holding the jump button
Toad: Fastest dig/pickup.