1980s

• 26 Puzzle(lost ZX Spectrum game)

• 3 Card Brag(lost ZX Spectrum game)
• 
  3D Gunner(cancelled Master System game)
• 3D Slime(lost ZX Spectrum game)
• 3D Tic-Tac-Toe(lost Atari ST game)

• 737 Cockpit(lost ZX Spectrum game)

• Ace Trucking Co.(lost ZX Spectrum game)
• All Systems Go(lost ZX Spectrum game)
• Android Run(lost ZX Spectrum game)
• Angles(lost ZX Spectrum game)
• Astrocode(lost ZX Spectrum game)
• Atari 2600 multicarts
• Auto Data(lost ZX Spectrum utility)
• AutoCourse(lost ZX Spectrum game)
• Awari(lost ZX Spectrum game)

• Bank Raid(lost ZX Spectrum game)
• Benidorm(lost ZX Spectrum game)
• Bingo(lost ZX Spectrum games)
• Bizmiller(lost ZX Spectrum game)
• Blackjack Winning Strategy Simulator(lost ZX Spectrum game)
• Blow Out(lost Atari 2600 game)
• Box 150(lost ZX Spectrum game)
• Brainzoff(lost ZX Spectrum game)
• Bug Race(lost ZX Spectrum game)
• Burger Attack(lost ZX Spectrum game)
• Bury the Moles(lost ZX Spectrum game)

• Candyland Surfing(cancelled Atari 2600 game)
• Caves of Cronos(lost ZX Spectrum game)
• Chaldon(lost ZX Spectrum game)
• Championship Ice Hockey(lost ZX Spectrum game)
• 
  Character Invader(lost ZX Spectrum game)
• Chess World Championship(lost ZX Spectrum game)
• Chromacode(lost ZX Spectrum game)
• Convoy(lost ZX Spectrum, & Atari 8-Bit game)
• Cosmanoids(lost ZX Spectrum game)
• Cosmic Intruders(lost ZX Spectrum game)
• Count's Castle(cancelled Atari 2600 game)
• Crazy Balloon(lost ZX Spectrum game)
• Cryptomania(lost ZX Spectrum game)
• Cube Simulator(lost ZX Spectrum game)

• Dalek Dan(lost ZX Spectrum game)
• 
  Dazzler(unreleased Atari 2600 port of Century Electronics port)
• Deadline(lost ZX Spectrum game)
• Death Maze of Mandragon(lost ZX Spectrum game)
• 
  Dodge City 2(lost ZX Spectrum game)
• 
  Domino Man(unreleased Colecovision game)
• Doombugs(lost ZX Spectrum game)

• Eddy Electric(lost ZX Spectrum game)
• Elephant Polo(lost ZX Spectrum game)
• England's Glory(lost Atari 8-Bit, & ZX Spectrum ports)
• Europe Quiz + World Maps(lost ZX Spectrum game)
• Execution(lost ZX Spectrum game)
• Extensor(lost ZX Spectrum game)

• Fight Over Mars(lost ZX Spectrum game)
• Firepower(lost ZX Spectrum game)
• Forbidden Fruit(lost ZX Spectrum game)
• Four In a Row(lost ZX Spectrum game)
• Fussball Trainer(lost ZX Spectrum game)

• Gamma Strike(lost ZX Spectrum game)
• Grand Prix Riders(lost ZX Spectrum game)

• Hack Hack(lost ZX Spectrum game)

• Icepac(lost ZX Spectrum game)

• Jedhi Chase(lost ZX Spectrum game)

• Kachiri(lost ZX Spectrum game)
• Krazy Kitchens(lost ZX Spectrum game)

• Lander(lost ZX Spectrum game)
• Limited Overs(lost ZX Spectrum game)
• Luna-tik(lost ZX Spectrum game)

• Matchday(lost ZX Spectrum game)
• Megasub Command(lost ZX Spectrum game)
• Mission Zolo(lost ZX Spectrum game)
• Money Run(lost ZX Spectrum game)

• Nnnudger(lost ZX Spectrum game)

• Odds On(lost ZX Spectrum game)
• Old Scores(lost ZX Spectrum game)
• Other lost unlicensed variants of Atari 2600 games

• Pinball(lost ZX Spectrum game)
• PK-100 Electronic Keyboard(lost NES accessory)
• Polaris Patrol(lost ZX Spectrum game)

• 
  Quake Minus One(cancelled ZX Spectrum port)
• Quiz-Cross(lost ZX Spectrum game)

• Ring-O(lost ZX Spectrum here)
• Roleta(lost ZX Spectrum game)

• Satanas(lost ZX Spectrum game)
• Seal To Whales(lost Atari 2600 game, 1983)
• Sinclair Casino(lost ZX Spectrum game)
• Snurf(lost ZX Spectrum game)
• Spectral Repeat(lost ZX Spectrum game)
• Spectroid Storm(lost ZX Spectrum game)
• Stake Out(lost ZX Spectrum game)
• Star Force Seven(lost ZX Spectrum game)
• Star Snake(lost ZX Spectrum game)
• Stock Broker(lost ZX Spectrum game)
• Storm Warrior(lost ZX Spectrum port)
• Super Snooker(lost ZX Spectrum game)

• Takeover(lost ZX Spectrum game)
• Trackmaster(lost ZX Spectrum game)
• Tuck Shop(lost ZX Spectrum game)

• Underworld(cancelled Atari 2600 game)

• Virus(lost ZX Spectrum game)

• Weed Attack(lost ZX Spectrum game)
• 
  Weird Al Yankovic - Orgy On my Own (weird al singing version)
• Who Dares Wins(lost ZX Spectrum game)

• Zarjaz(lost ZX Spectrum game)
• Zone 00(lost ZX Spectrum game)
• ZX Trek(lost ZX Spectrum game)
• ZZ And the TTs Football Simulator(lost ZX Spectrum game)