In the July build, you see a team still searching. You see wrong turns (the barren hill), abandoned ambitions (Luigi), and mechanics that would be perfected only after months of painful iteration. It’s a reminder that even a masterpiece begins as a mess.

For decades, Super Mario 64 has stood as a monolith of game design—a flawless bridge between 2D precision and 3D exploration. But the game we know today (released in June 1996) was not born fully formed. Before the final version, there was a chaotic, ambitious, and utterly fascinating prototype compiled on July 21, 1995 (often referred to as the "July 1995 build").

The July 1995 build of Super Mario 64 is not just a leak. It’s a time machine—one that shows us the moment a plumber first learned to walk in 3D. Want to experience it yourself? Legally, the ROM remains copyrighted by Nintendo, but numerous emulation archives and YouTube breakdowns (such as those by the "Hard4Games" channel) provide detailed video tours of every bizarre corner of this prototype.

This build, which leaked online in late 2020, is the gaming equivalent of discovering an alternate dimension—a version of Mario 64 that feels alien, surreal, and radically different from the polished classic we grew up with. In early 1995, Nintendo was in crisis. The Ultra 64 (later renamed Nintendo 64) was months behind schedule, and the launch lineup was barren. Shigeru Miyamoto and his team at Nintendo EAD had spent nearly two years experimenting with how to translate Mario into 3D. By July 1995, they had a playable, if unstable, build running on dev hardware—just five months before the console’s first public showing at Nintendo’s Shoshinkai event.

For fans, playing the July 1995 build is like visiting a ghost town—familiar shapes, but no life. For developers, it’s a masterclass in perseverance. And for everyone else, it’s a thrilling “what if” that makes us appreciate the final game all the more.