could chase, grab, and hurl Mario across the stage. Although fully programmed, he was completely removed, leaving only his code behind as a relic of early development Beta Blargg : Originally planned for Lethal Lava Land , this fire-breathing dinosaur from Super Mario World
Before the final version hit shelves in 1996, Super Mario 64 went through a radical metamorphosis. Thanks to the 2020 "Gigaleak" (a massive dump of Nintendo’s internal development data), we finally got a clear look at the "lost" version of the game. While we knew about the infamous "Beta Course" from kiosk demos, the internal assets revealed a much stranger, cooler, and sometimes terrifying version of the Mushroom Kingdom.
In the mid-1990s, Nintendo’s EAD team built and scrapped dozens of ideas for the 3D platformer that would define a generation. Thanks to the 2020–2021 “Gigaleak” (and earlier Spaceworld demos), we can now explore these phantom pieces. Here are the that still captivate fans today.
This model was not a simple palette swap. Luigi's 3D model boasted unique textures for his hat emblem, a distinct mustache, and different sideburns, confirming he was a serious development effort, likely for a scrapped two-player mode. The discovery of this model remains one of the most celebrated moments in beta asset hunting, finally providing definitive proof for a rumor that had persisted since the game's launch. Its legacy lives on not just as a file, but as a cornerstone of fan discussions and restorations. super mario 64 beta assets best
Taking its name from a mythical haunted build of the game (the "07/29/1995 build" meme), B3313 is the largest beta-based hack in existence. It is a sprawling, non-linear fever dream where the player navigates a seemingly infinite castle that connects to scrapped levels, early concepts, and twisted versions of final ones. The hack's vastness and its incorporation of the "personalization AI" lore have made it the most-downloaded hack on Romhacking.com, with over 83,000 downloads. For sheer scope and creative use of cut content, B3313 is unmatched.
They show Nintendo building 3D Mario from scratch — no polish, just pure experimentation. It’s the archaeological bedrock of a masterpiece.
Inside the castle, the portraits for Bowser were different. They used stylized art, which was eventually changed to a more polished, 3D-esque render. could chase, grab, and hurl Mario across the stage
Early screenshots show the coin and star icons in the top-left corner were stylized, 16-bit icons rather than the finalized 3D rendered models.
Yoshi as a rideable mount Why it’s great:
Many of these assets are now being used in "beta-restoration" hacks like Super Mario 64: The Missing Stars , allowing fans to play what might have been. While we knew about the infamous "Beta Course"
The beta assets revealed several entirely lost worlds that never made it past the grey-box testing phase.
Super Mario 64’s beta assets—early textures, models, level geometry, music cues, and cut content discovered in ROMs and developer builds—offer a fascinating window into Nintendo’s design process and why certain versions of assets are often called “the best” by fans and historians.