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The term secret gambling games (also known as "stealth gambling games" by MAME developers) refer to arcade games with hidden gambling functions. These games are usually unlicensed versions of other arcade games, including Pac-Man, Space Invaders, and Tetris, often with a drastic downgrade in gameplay, graphics and music. A switch is present in the games that switches the game to a gambling machine. Secret gambling games were often used in areas where gambling was deemed illegal, the arcade portion added to avoid action from law enforcement.

Some other illicit gambling establishments have also known to use a less practical setup involving two PCBs and switch system, one for a seemingly legal arcade game and the other containing the machine's true intentions.

Cherry Master Edit

Several versions of Cherry Master feature a port of Ms. Pac-Man, branded as Super Pacman with maze turned to 90 degrees. One could argue this hardware was not designed to run action-heavy games like Ms. Pac-Man; the game runs incredibly choppy. Another version features Tetris instead. Using a secret input, the games will boot into Cherry Master (version 8.01 for the Tetris, and 8.31 for Super Pacman version). The original Cherry Master games were made by Dyna based in Osaka, Japan, but these bootlegs were made by another company named Corsica and runs on different hardware.

Water-Nymph Edit

A video slot game created by the Taiwanese company Subsino in 1996 featuring marine themes; the game features a basic Columns clone as a disguise game.

X-Plan Edit

A poker game disguised as an generic aircraft shoot-em-up game created by Subsino, dated 2006 according to the title screen. The game features one-button switch intended to be installed "at the secret area, where is most safe and operate easily" in regard to switching modes.

Space Invaders and Pac-Man Edit

Also known to exist are Space Invaders and Pac-Man clones - the gambling mode reuses sprites from both games specifically. The company that made the games and their release years are unknown, although the games run on the same hardware as 4 En Raya - a Connect Four-type game made by the Spanish company IDSA.

Trivia Edit

  • A gambling game called Crazy Bonus hides itself by using a Windows ME desktop, rather than another game.[1]
  • The game Blockout (TAX) in MAME is believed to be a secret gambling game, but due to its preliminary emulation, this is not yet confirmed.
    • Similarly, the game Fruit Land (an original game featuring Pac-Man) reportedly has a gambling mode, according to several Ebay auctions, but no evidence of this can be found in its code.[2]

Reference Edit

  1. "[Crazy Bonus] is a stealth set that hides behind a fake Windows ME desktop if DSW2-6 is off. Push Start followed by Bet five time to access the game. It will return to the desktop after the game is over." [1]
  2. https://mamedev.emulab.it/haze/2013-mame/
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