Mystique (a.k.a. American Multiple Industries) published (ahem) "Beat 'Em & Eat 'Em" in 1982, an "adult" game for the Atari 2600 with a tie-in to the Swedish Erotica brand of adult entertainment.  It's basically a version of Avalanche or Kaboom!, where the player uses an Atari paddle controller to catch the output of an apparently very well-hydrated gentleman enjoying himself on the rooftops.  These games were unique at the time, sold "under the counter" and via mail order at a time well before the ESRB existed.

COMPLETE, TESTED and WORKING with original box, game cartridge, vinyl cartridge case, registration card, and manual.  Everything is in excellent condition, clean, bright and square with no markings, stickers, or visible usage wear.