A Lottery Shop is a building in Mario Party 4 where players can play lottery games to win prizes. Each game costs five coins to play. There are two types of games, one of which is randomly chosen when the player enters the shop.
The ball-type game involves turning the control stick until a colored ball pops out of a machine. A blue ball indicates third prize, a pink one second prize, and a yellow one first prize. A white ball wins nothing.
The scratch ticket game involves the player picking one of twelve scratch cards and scratching it to reveal a prize. One card each will win the player first, second, or third prize, indicated by a 1, 2, or 3 on the card, respectively. The remaining nine cards have the text "Try Again", winning nothing.
The prizes are a Super Mega Mushroom or a Super Mini Mushroom for third prize, 30 coins for second prize, and 100 coins for first prize. If a player winning third prize already holds three items, they will not be able to collect it.
Additionally, if it is a player's first visit to the lottery shop and the visit came before the last five turns of the game, the player receives a free Lucky Party Ticket. Also, if any players enter the shop while mini, a block is provided for them to stand on when playing.