Beach Volley Folly

Beach Volley Folly is a one- or two-player Extra Room minigame in Mario Party 4. If the player selects the Ztar, they get to play this minigame. The Mario Party 4 version of the minigame is also included as a Special minigame in Mario Party: The Top 100 as well as in Mario Party Superstars. Though the minigame does not appear in Mario Party 5, it is reworked into Beach Volleyball.

Setting
The game takes place on a beach with red and blue umbrellas, a yellow-and-green umbrella at the bottom left corner, and red and blue fences with several Super Stars on them. There is also a restaurant at the top left corner called Kinopio Burger. During the introduction, the camera takes a view of the Goomba as a lifeguard sitting on his stool and the sun, then zooms out to reveal the two teams that are on each side of the volleyball net.

Gameplay
The game pits two teams of two against each other in a beach volleyball match. The player(s) must work their way to the top, facing six other teams along the way. If Battle Mode is completed, Free Mode is unlocked, allowing up to four players to play together. The Birthday Cake is also unlocked and placed in the Minigame Room of the Present Room. The game ends when one side reaches five points. The player can also choose between 7–21 points in The Top 100 version.

The normal cast of characters is playable alongside characters exclusive to this mode. The exclusive playable characters in Beach Volley Folly are Toad, Koopa Troopa, Shy Guy, Boo, Bowser, and Koopa Kid. They are unlockable characters and are usable only in Free Mode. In later variations of Beach Volley Folly, only the playable cast of characters in those respective Mario Party games is usable.

Mario Party 4

 * – Move
 * – Hit the ball / Dive
 * – Jump
 * → – Spike

Mario Party: The Top 100

 * Move
 * Receive / Attack
 * Block / Jump
 * in the air: Move targeting
 * → – Spike

Mario Party 4

 * "This is 2-on-2 volleyball. Return the ball within 3 volleys. The first team to get 5 points wins."

Mario Party: The Top 100

 * Description – "Play beach volleyball and reach the point goal before the other team!"
 * On-screen – "Reach the point goal first!"