Pre-release builds that show how games were made — and unmade
Before becoming the sleek blue icon the world knows, Sonic passed through a chubby, human-nosed concept stage codenamed "Mr. Needlemouse" — a radically different design that bears little resemblance to the final character.
Nintendo's 1996 Spaceworld demonstration of Ocarina of Time showed a vastly different visual style and combat system that bore only partial resemblance to the game that shipped two years later.
The earliest public demonstration of Super Mario 64 showed a rudimentary Mario head manipulable by the N64 controller, establishing the hardware's 3D credentials while the actual game design was still months from definition.
The earliest internal prototype of GoldenEye 007 was a third-person on-rails shooter rather than the groundbreaking first-person stealth experience it eventually became, representing a complete reimagining of the game's design direction.
id Software's Doom alpha builds from early 1993 featured a radically different monster roster, an alternate HUD design, and weapons that were substantially reworked before the final December 1993 release.
Capcom's original Rockman prototype showed a game with a fixed stage order rather than the player-selectable structure that became the franchise's defining innovation, along with different weapon designs and energy system mechanics.
Capcom's Street Fighter II beta builds, partially reconstructed from a location test ROM that leaked in 2017, showed a game with unbalanced character movesets, missing special moves, and significantly different frame data from the version that reached arcades.
Star Fox began as a Super NES Scope tech demo by Argonaut Software intended to demonstrate 3D polygon rendering on the SNES before Nintendo redirected the project into the franchise's foundational title.
A nearly complete localised NES version of Mother — titled EarthBound — was prepared by Nintendo of America in 1989 and 1990 before being cancelled, and the ROM was ultimately released officially by Nintendo in 2015 after sitting unreleased for 25 years.
Square's Final Fantasy VII began development as a 2D Super Nintendo RPG before the team's transition to PlayStation and 3D graphics necessitated a complete design reimagining, with early concept work that bears almost no resemblance to the shipped game.
Chrono Trigger's initial concepts, developed when Square assembled the "Dream Team" of Sakaguchi, Horii, and Toriyama in 1992, included a world structure and battle system considerably different from the finished game's approach.
Konami's troubled transition of Castlevania to 3D involved early builds significantly more ambitious than the game that shipped, with a larger castle, more playable characters, and a different camera approach that was progressively simplified as technical challenges mounted.