Game Guy's Sweet Surprise

Game Guy's Sweet Surprise is a Game Guy minigame in Mario Party 3.

Gameplay
All the player has to do is predict which Chain Chomp can eat their cake the fastest. Big Chomp will most likely finish first, and should the player correctly predict that he will win, they will double their coins. However, if the player correctly guesses that Little Chomp will win, their coins will be multiplied by an even greater number: either 4, 8, 16, 32, or 64. Before selecting a Chomp, players can read a description of their moods, which may signify if they are capable of winning, but this is not always accurate. If the player makes the wrong prediction, they will lose all their coins, as with any Game Guy minigame.

Mechanics
The probability that the Little Chomp wins depends greatly on the multiplier assigned to it. At fixed intervals, one of the two Chomps will take a bite of the cake, with a 40% chance of taking a second bite. The first Chomp to take six or more bites wins.

This means that the overall probabilities that the Little Chomp finishes the cake first are as follows:

Controls

 * or – Choose Chain Chomp
 * – Select Chain Chomp

In-game text

 * Game Guy – "The Big Chomp and the Little Chomp will have a cake-eating race. Predict which one will be the quicker cake eater. If you guess right, you'll get more coins. But, if you guess wrong, your coins will be mine."