Game Guy's Roulette

Game Guy's Roulette
Appears in	Mario Party 3
Type	Game Guy mini-game
Time limit	10 seconds to select a roulette space
Music track	Game Guy Mini-Game
Music sample

Game Guy's Roulette is a Game Guy minigame found in Mario Party 3.

Gameplay

The player attempts to pick which space on the roulette wheel the Red Shell will spin into, from wide to narrow and from less to more. After that, Game Guy spins the shell around the roulette. If the shell spins into another spot instead of the spot the player picked, the player loses all the coins.

Spaces on the roulette

• The green Koopa Troopa space contains six slots on the roulette wheel and doubles the player's coins.
• The dark-blue Bob-omb space contains five slots on the roulette wheel and multiplies the player's coins by four.
• The brown Goomba space contains four slots on the roulette wheel and multiplies the player's coins by eight.
• The light-blue Boo space contains three slots on the roulette wheel and multiplies the player's coins by 16.
• The pink Toad space contains two slots on the roulette wheel and multiplies the player's coins by 32.
• The red space directly in front of Game Guy contains just one slot on the roulette wheel and multiplies the player's coins by 64.

Expected value

Let B be the number of coins bet and observe that there are 21 spaces on the roulette wheel. The following table shows the EV for each area the player can choose.

Bet on	Expected value
	2B * 6/21 = 12B/21 ≈ 0.5714B
	4B * 5/21 = 20B/21 ≈ 0.9524B
	8B * 4/21 = 32B/21 ≈ 1.5238B
	16B * 3/21 = 48B/21 ≈ 2.2857B
	32B * 2/21 = 64B/21 ≈ 3.0476B
File:Game Guy Game Guy's Roulette icon.png	64B * 1/21 = 64B/21 ≈ 3.0476B

Although betting on Koopa Troopa is most likely to earn the player coins in a single minigame, constantly betting on Koopa Troopa makes the player most likely to lose coins in the long run. On the other hand, constantly betting on Toad or Game Guy makes the player more likely to triple their coins in the long run.

In-game text

• Game Guy – "Place your bet, then make your guess. If the shell stops in the area you chose, your coins will increase according to the odds. If the shell lands in another area, your coins will be mine."

Gallery

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• Game Guy Game Guy's Roulette icon.png

Names in other languages

Language	Name	Meaning	Notes
Japanese	ヘイホールーレット[?] Heihō rūretto	Shy Guy Roulette
German	Glücks Guy[?]	Gambling Guy