Prototypes by system
Notes
A lot of the wiki is a work in progress. Many games are currently lacking title screenshots.
Third generation
NES
Subpage: Prototypes by system/NES (236 prototypes)
Fourth generation
Sega Mega Drive
Subpage: Prototypes by system/Sega Mega Drive (820 prototypes)
Sega CD
Subpage: Prototypes by system/Sega CD (54 prototypes)
Sega 32X
Subpage: Prototypes by system/Sega 32X (161 prototypes)
Sega Pico
Subpage: Prototypes by system/Sega Pico (117 prototypes)
SNES
Subpage: Prototypes by system/SNES (427 prototypes)
Fifth generation
Sega Saturn
Subpage: Prototypes by system/Sega Saturn (211 prototypes)
PlayStation
Subpage: Prototypes by system/PlayStation (1163 prototypes)
Nintendo 64
Subpage: Prototypes by system/Nintendo 64 (234 prototypes)
Atari Jaguar
Subpage: Prototypes by system/Atari Jaguar (51 prototypes)
Atari Jaguar CD
Subpage: Prototypes by system/Atari Jaguar CD (16 prototypes)
Sixth generation
Dreamcast
Subpage: Prototypes by system/Dreamcast (505 prototypes)
PlayStation 2
Subpage: Prototypes by system/PlayStation 2 (1427 prototypes)
Nintendo GameCube
Subpage: Prototypes by system/Nintendo GameCube (97 prototypes)
Handhelds
Game Gear
Subpage: Prototypes by system/Game Gear (343 prototypes)
Neo Geo Pocket Color
Subpage: Prototypes by system/Neo Geo Pocket Color (25 prototypes)
Game Boy
Subpage: Prototypes by system/Game Boy (295 prototypes)
Game Boy Advance
Subpage: Prototypes by system/Game Boy Advance (318 prototypes)
Nintendo DS
Subpage: Prototypes by system/Nintendo DS (723 prototypes)
PlayStation Portable
Subpage: Prototypes by system/PlayStation Portable (191 prototypes)
Other
PC
Subpage: Prototypes by system/PC (810 prototypes)