If the player chooses to leave, Mickey says goodbye to the ghost and begins to go home, but the ghost decides to go with him (however, if the player has only collected at least eight mirror pieces, the ghost won't be able to go with him at all). Choosing to stay will make the ghost run off, leaving Mickey stuck in the alternate world until he reenters the mirror room where the player can choose to stay or leave again. The player could either chose to stay or go. After repairing the mirror, he prepares to leave but the ghost stops him revealing that it only brought him here so he can have someone to play with. Whenever he finds a piece, it will fly back to the mirror and put itself back in place. The player must direct Mickey to outwit and pull gags in order to get past enemies, obstacles, and the aforementioned ghost and recover the twelve broken mirror pieces he needs to go home again and search for twelve magic stars (needed to pull gags) and items needed to help him throughout his quest. Stuck in an alternate universe that strangely resembles his own house, Mickey yearns to get back through the mirror to his own house and his own bed in order to wake up from this dreamlike state, however the ghost destroys the mirror and the pieces shrink and fly off to different areas around the house which turns the magic mirror into a normal mirror. One night when Mickey is fast asleep, he falls into a dream where a mischievous ghost traps a dream vision of himself inside a magic mirror. Special souvenirs may be uncovered as well, which are displayed in Mickey's room at the end of the game, such as Pluto's collar or Minnie's bow. Mini-games, such as having Mickey fly an airplane or ski down a mountain, are available throughout the game.

At certain points, the player is able to have Mickey perform a special move that generally involves having him stomp on an onscreen enemy. Mickey will react to what the player does and what he encounters in the game by expressing curiosity, getting mad, falling down, running away, standing his ground, or other actions. The game uses a simple point-and-click mechanic which involves using a cursor to guide Mickey Mouse to various locations.

Mickey mouse mirror game