The Hot Coffee mini-game for "Grand Theft Auto: San Andreas" is accessible only when main character Carl Johnson gets invited by his girlfriend to her home for "coffee" or sex. It can only be unlocked and played in the game by installing a third-party patch.
The author of Hot Coffee Mod no longer hosts the file for download, given the subsequent controversy that arose after its release. Without the mod, players can't play the adult-oriented mini-game in the retail versions of the game. Developer Rockstar Games also offers an official patch to prevent players from playing the mini-game even with the Hot Coffee Mod installed.