Lost Atari

• 32 In 1 (unreleased Polish Atari 2600 multicart)
• 3D Tic-Tac-Toe (lost Atari ST game)

• AC/DC: Defenders of Metal (unreleased Atari Jaguar game)
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  Adam Caveman (lost Commodore 64, & Atari 400 game)
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  Adidas Championship Football (lost Atari ST port)
• Adventures of Max (cancelled Atari 2600 game)
• Aimpoint (lost Atari 2600 game)
• Arena Fight (lost Atari 2600 game by Home Vision)
• Around the World (lost Atari 2600 game by Home Vision)
• Atari 2600 multicarts
• Aterrizaje (lost Atari 2600 game)

• Bird Power (lost Atari 2600 game)
• Blow Out (lost Atari 2600 game)
• Blue Earth (cancelled Atari Lynx game)
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  Buggy Ball (supposedly cancelled Atari Jaguar game)

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  Cabal (lost Atari Lynx port)
• Candyland Surfing (cancelled Atari 2600 game)
• Comp-K7/A - Cartridge Expansion (lost Atari 2600 add-on)
• Convoy (lost ZX Spectrum, & Atari 8-Bit game)
• Cosmic (lost Atari 2600 game)
• Count's Castle (cancelled Atari 2600 game)
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  Cumulus (cancelled Atari 2600 game)

• Dallas Pinball (lost Atari 8-Bit game)
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  Dazzler (unreleased Atari 2600 port of Century Electronics port)

• England's Glory (lost Atari 8-Bit, & ZX Spectrum ports)

• Festival Fun (lost Atari 8-Bit game)
• Football Soccer (unknown unlicensed variant of Champion Soccer on the Atari 2600)
• Friday the 13th (cancelled Atari 2600 game)
• Category:Funvision

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  Game Show Games (Atari 2600, 1983)
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  Garfield (Atari 2600 game, circa 1980's)
• Geled's Dungeon (lost Atari 8-Bit game)
• Geoduel (unreleased Atari Lynx game)
• Glutton (lost unlicensed variation of Fast Food on Atari 2600)
• Grid Warrior (lost Atari 8-Bit game)

• Handball (lost Atari 8-Bit game)
• Category:Home Vision
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  Hyper Power League Baseball (supposedly cancelled Atari Jaguar homebrew game)

• Impossible Mission (lost Atari 8-Bit game)
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  Iratan Supremacy (cancelled Atari Jaguar game)

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  Kylrbyte (Supposedly cancelled Atari Jaguar homebrew game)

• Land Protection (lost Atari 2600 game)
• Locomotive (cancelled Atari 2600 game)
• Looping (lost Atari 2600 port by Splice)

• Mad Spiker (lost Atari 8-Bit game)
• Mazy Match (lost unlicensed variant of Unknown Atari 2600 game by Datatech)
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  Miki Dog (lost Atari 2600 game)
• Mission Omega (cancelled Atari 2600 game)
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  Mogul Maniac (unreleased Colecovision port)

• NBA Handicapper 2 (lost Atari 8-Bit game)
• Nuclear Rebound (lost Atari 8-Bit game)

• Other lost unlicensed variants of Atari 2600 games

• Play Farm (lost Atari 2600 game by Home Vision)

• Robin's Halloween (lost Atari 8-Bit game)

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  Sailer (lost Atari 2600 game)
• Scrabbit (lost Atari 8-Bit game)
• Sharp Wold (lost Atari 2600 game)
• Sky Blazer (unreleased Atari 2600 game)
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  Steel Talons (cancelled Atari 7800 port)
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  Stunt Car Racer (cancelled Atari Jaguar game)
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  Swordquest: Airworld (Unreleased 1980s Atari 2600 Game)

• Take-5 (lost Atari 8-Bit game)
• Tank (unreleased Atari 2600 game by Imagic)

• Underworld (cancelled Atari 2600 game)
• US Road Signs (lost Atari 8-Bit game)

• Voleibol (lost unlicensed variation of Realsports Volleyball on Atari 2600)

• Waqual (lost Atari 8-Bit game)
• Water Torture (lost Atari 8-Bit game)