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Mario Roulette (マリオルーレット) is an uncommon Japan-only medal game developed by Nintendo in partnership with Konami (who made the machines) and released in 1991, being one of the first medal games from the Mario franchise. The graphics are based heavily on Super Mario World and the gameplay of the Bonus Game.
Mario is the main character that appears throughout the game mounted on Yoshi. During the attract mode, a cutscene showing Mario mounted on Yoshi traversing a scenario like in the title screen (image above, note that it is similar to the gameplay of Super Mario World) showing the name of the game after a few seconds. Then an instructional video is shown where Mario explains how to play. After this, there is a demo of the game in action, and then it goes back to the title.
After inserting up to three medals (a kind of currency that is often exchanged for prizes or to play again) out of the game title screen, the game begins. The more medals the player wagers, the higher the prizes. The game consists of a wheel with 8 black squares, showing an icon of an item.
These items are Mushrooms, Cape Feathers, Stars or the Fire Flower. These symbols are turning beside one at the center beside one that is in the center and stopped at first.
To make them stop, the player must press the only button on the machine. After pressing the button, the icons stop spinning around, showing the items that were shown, and then the icon in the center begins to randomly select the icon that is at the center, and the player must press the button again to stop it.
If the symbols match the center to form lines, the player wins, and the screen flashes the symbols that were made to win with green "Win" marks. Mario strikes his victory pose as the bonus clear music from Super Mario World plays, and then a screen with a picture of Mario in a yellow circle on a blue background striking a victory pose with the word "COIN" and the number of prize winnings appear, and the player receives them. If the player cannot align the icons so right, or center stop icon into a picture that shows Bowser, he loses the round. Mario dies with the death music for the former, and all squares turn into Bowser with some ominous music for the latter. If the player gets Peach, it acts as all symbols, the princess rescued theme plays, and Mario strikes his pose. Then, if the player wins big, normal or with Peach, a cutscene is shown saying "BIG BONUS" with the invincible theme playing, and Mario hitting a block that makes coins come out of it. After ten coins, it comes back to the "COIN" screen.
After winning and losing, the game returns to attract mode for the person to play again.
The machine measures weigh 40 kg and 450 mm wide, 530 mm deep and 1.285 mm in height. It has a 14-inch color monitor (made by Toshiba), consuming a total of 80W of electricity.
It accepts coins of 10 and 100 yen, and is capable of storing 1000 coins of 100 yen. To illustrate the machine were used some artworks from other Super Mario games as Super Mario Bros. 2. Each machine cost around 320,000 yen.