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Casino is a destructive computer virus, which is somewhat more sporting than its typical data-destroying brethren. If the infected file is run on January 15, April 15 or August 15, the virus displays a message where it informs the user that it has just erased the hard disk's FAT table, but promises to restore a backup copy from RAM if the user can win a game of Jackpot.

The unwilling "player" has five chances to pull the lever of a virtual ASCII-art slot machine. Three different symbols (a pound sign, a cent sign, a question mark) can appear in the three slots. Getting three pound signs makes the virus restore the FAT table, before warning the user to shut off the computer and don't run it again until the next day. If all five credits are spent without success, the virus shuts down with a gleeful, obscene message, taking the user's FAT with itself. Getting three question marks is supposedly meant to display the author's phone number, but in fact only results in the virus angrily telling the user off and deleting the FAT.


Casino DOS You lost, your FAT is gone, and you're apparently an "asshole"
Casino DOS Nope, the author won't let you see his number, instead "punishing" you (for what?)
Casino DOS Opening screen
Casino DOS Jackpot. The data is saved (supposedly)

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Alternate Titles

  • "Virus.DOS.Casino.2330" -- Name given by Kaspersky Virus Removal Tool
  • "Casino.2330" -- Name given by McAfee AntiVirus

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JudgeDeadd (26601) added Casino (DOS) on Oct 17, 2016