| | Date | System |
|---|
| 3D Gunner (Prototype) | | Sega Master System |
| Action Fighter (Prototype) | | Sega Master System |
| Alex Kidd: High-Tech World (Prototype) | | Sega Master System |
| Alien Syndrome (Prototype) | | Sega Master System |
| Andre Agassi Tennis (Prototype) | | Game Gear |
| Astro Warrior & Pit Pot (Prototype) | | Sega Master System |
| Ax Battler: A Legend of Golden Axe (Oct 8, 1991 prototype) | | Game Gear |
| Ayrton Senna's Super Monaco GP II (Prototype) | | Game Gear |
| Barbie Super Model (Prototype) | | Game Gear |
| Basketball Nightmare (Prototype) | | Sega Master System |
| Battle Wings (Prototype) | | Sega Master System |
| BreakThru! (Game Gear Prototype) | | Game Gear |
| Bubble Bobble (Game Gear Prototype) | | Game Gear |
| CJ: Elephant Fugitive (Oct 22, 1993 prototype) | 22 October 1993 | Game Gear |
| Captain Silver (Prototype) | | Sega Master System |
| Cave Dude (Prototype) | | Game Gear |
| Chicago Syndicate (Mar 20, 1995 prototype) | 20 March 1995 | Game Gear |
| Choplifter! (Jul 1, 1986 prototype) | | Sega Master System |
| Choplifter! (SG-1000 Prototype) | | SG-1000 |
| Choplifter! (Sega Master System Prototype) | | Sega Master System |
| Chouon Senshi Borgman (Prototype) | | Sega Master System |
| Chuck Rock (Prototype) | | Game Gear |
| Columns (Prototype) | | Sega Master System |
| Crazy Faces (Prototype) | | Game Gear |
| Cutthroat Island (Prototype) | | Game Gear |
| Cyber Police ESWAT (Prototype A) | | Sega Master System |
| Cyber Police ESWAT (Prototype B) | | Sega Master System |
| Cyber Police ESWAT (Prototype C) | | Sega Master System |
| Cyborg Hunter (Prototype) | | Sega Master System |
| David Robinson's Supreme Court (Prototype) | | Game Gear |
| Dead Angle (Prototype) | | Sega Master System |
| Defenders of Oasis (Prototype) | | Game Gear |
| Dinobasher Starring Bignose the Caveman (Game Gear Prototype) | | Game Gear |
| Dinobasher Starring Bignose the Caveman (Master System Prototype) | | Sega Master System |
| Doki Doki Penguin Land: Uchuu Daibouken (Prototype) | | Sega Master System |
| Double Dragon Game Gear (Prototype) | | Game Gear |
| Double Hawk (Prototype) | | Sega Master System |
| Dr. Franken (Prototype) | | Game Gear |
| Dragon: The Bruce Lee Story (Prototype) | | Game Gear |
| Dynamite Düx (Prototype) | | Sega Master System |
| Dynamite Headdy (Earlier Game Gear Prototype) | | Game Gear |
| Fantasy Zone (REV01 prototype) | | Sega Master System |
| Fire & Ice (Prototype) | | Sega Master System |
| Frogger Game Gear (Prototype) | | Game Gear |
| Gain Ground (Prototype) | | Sega Master System |
| Ghost House (Prototype) | | Sega Master System |
| Ghouls 'N Ghosts (prototype) | | Sega Master System |
| Global Defense (Prototype) | | Sega Master System |
| Golfamania (Prototype) | | Sega Master System |
| Great Golf (Prototype) | | Sega Master System |
| Hang On & Safari Hunt (Prototype) | | Sega Master System |
| Hang-On (Prototype) | | Sega Master System |
| Heroes of the Lance (Master System Prototype) | | Sega Master System |
| Hook (Sega Master System Prototype) | | Sega Master System |
| Impossible Mission (Prototype) | | Sega Master System |
| Indiana Jones and the Last Crusade (Prototype) | | Sega Master System |
| James 'Buster' Douglas Knockout Boxing (Prototype) | | Sega Master System |
| King's Quest: Quest for the Crown (Prototype) | | Sega Master System |
| Lemmings 2 Game Gear (Prototype) | | Game Gear |
| Lemmings 2 Sega Master System (Prototype) | | Sega Master System |
| Lethal Weapon 3 (Prototype) | | Sega Master System |
| Mahjong Sengoku Jidai (Prototype) | | Sega Master System |
| Maou Golvellius (Prototype) | | Sega Master System |
| Micro Machines (Oct 22, 1993 prototype) | 22 October 1993 | Game Gear |
| Miracle Warriors: Seal of the Dark Lord (Prototype) | | Sega Master System |
| Missle Defense 3-D (Prototype) | | Sega Master System |
| Monopoly (Prototype) | | Sega Master System |
| Montezuma's Revenge (Prototype) | | Sega Master System |
| Mortal Kombat (Game Gear Prototype) | | Game Gear |
| NBA Jam Sega Master System (Prototype) | | Sega Master System |
| Nazo Puyo: Arle no Roux (Prototype) | | Game Gear |
| Off the Wall (Jun 28, 1992 prototype) | 28 June 1992 | Game Gear |
| Off the Wall (Prototype) | | TurboGrafx-16 |
| Out Run 3-D (Prototype) | | Sega Master System |
| Paperboy 2 (Prototype) | | Game Gear |
| Pat Riley Basketball Sega Master System (Prototype) | | Sega Master System |
| Promocao Especial Sega Master System III Compact | | Sega Master System |
| R-Type (Prototype) | | Sega Master System |
| R.C. Grand Prix (Prototype) | | Sega Master System |
| Rampage (SMS Prototype) | | Sega Master System |
| Rastan (Prototype) | | Sega Master System |
| Rayman (SNES prototype) | | SNES |
| SG-1000 M2 Check Program (Prototype) | | SG-1000 |
| Sega Game Pack 4 in 1 (Prototype) | | Game Gear |
| Sega Graphic Board (Aug 25, 1987 prototype) | | Sega Master System |
| Sega Master System BIOS M404 (Prototype) | | Sega Master System |
| Sega Master System BIOS v1.0 (Prototype) | | Sega Master System |
| Sega Master System Color and Switch Test (Prototype) | | Sega Master System |
| Shanghai (Prototype) | | Sega Master System |
| Slap Shot (Prototype) | | Sega Master System |
| Solomon no Kagi: Oujo Rihita no Namida (Prototype) | 1 February 1988 | Sega Master System |
| Sonic & Tails (Demo) | 14 September 1993 | Game Gear |
| Sonic Drift (Demo) | | Game Gear |
| Sonic the Hedgehog (8-bit) (Prototype) | | Game Gear |
| Special Criminal Investigation (Prototype) | | Sega Master System |
| Spirou (Game Gear prototype) | | Game Gear |
| Street Battle (Prototype) | | Game Gear |
| Street Heroes (Prototype A) | | Game Gear |
| Street Heroes (Prototype B) | | Game Gear |
| Streets of Rage 2 (Game Gear Prototype) | | Game Gear |
| Strider (Prototype) | | Sega Master System |
| Summer Games (Prototype A) | | Sega Master System |
| Summer Games (Prototype B) | | Sega Master System |
| Super Basketball (Prototype) | | Sega Master System |
| Super Golf (Prototype) | | Sega Master System |
| Super Monaco GP Sega Master System (Prototype A) | | Sega Master System |
| Super Monaco GP Sega Master System (Prototype B) | | Sega Master System |
| Super Off Road (Game Gear Prototype) | | Game Gear |
| Super Off Road (Sega Master System Prototype) | | Sega Master System |
| Superman (Prototype) | | Game Gear |
| Taito Chase H.Q. (Prototype) | | Sega Master System |
| Taz-Mania Sega Master System (Prototype) | | Sega Master System |
| Teddy Boy Blues EPMycard (Prototype) | | Sega Master System |
| Tengen World Cup Soccer (Prototype) | | Game Gear |
| The A-Team (Prototype) | | Sega Master System |
| The Cyber Shinobi (Prototype) | | Sega Master System |
| The Excellent Dizzy Collection (Prototype) | | Sega Master System |
| The Lucky Dime Caper starring Donald Duck (May 28, 1991 prototype) | 28 May 1991 | Sega Master System |
| The Smurfs Travel the World (Aug 12, 1996) | 12 August 1996 | Sega Master System |
| TransBot (Prototype) | | Sega Master System |
| WildSnake (Gamegear Prototype) | | Game Gear |
| Wonder Boy III: The Dragon's Trap (Prototype) | | Game Gear |
| Wonder Boy in Monster Land (Prototype) | | Sega Master System |
| World Cup Italia '90 (Prototype) | | Sega Master System |
| World Games (Prototype) | | Sega Master System |
| World Grand Prix (Prototype) | | Sega Master System |
| Yogi Bear in Yogi Bear's Goldrush (Prototype) | | Game Gear |
| Ys: Ancient Ys Vanished Omen (Prototype) | | Sega Master System |
| Zaxxon 3D (Prototype) | | Sega Master System |
| Zillion II: Tri Formation (Prototype) | | Sega Master System |
| Zoop (Game Gear Prototype) | | Game Gear |
