Game Guy's Sweet Surprise

Game Guy's Sweet Surprise is a Game Guy minigame found in Mario Party 3 for the Nintendo 64.

Gameplay
All the player has to do is to 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're capable of winning, but this isn't always accurate.

If the player makes the wrong prediction, they 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 6 or more bites wins.

As an example, by running five million simulations using the above values, the following shows approximate win percentages for the Little Chomp:

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."