In 1996, IGN launched a $100 bounty challenging readers to prove Luigi was in Super Mario 64. While the myth persisted for decades, recent access to Nintendo’s source code through the "Gigaleak" data breach has finally provided a lead, closing a 30-year chapter in gaming history.
The Origins of a 30-Year Myth
When Super Mario 64 debuted in 1996, it fundamentally altered the trajectory of 3D platformers. For a generation of players, the game was not just a technical marvel; it was a digital landscape shrouded in mystery. Despite Mario and Luigi appearing together in previous titles since 1985, the brother in green was absent from this solo adventure.

This absence birthed one of the most resilient rumors in gaming. As reported by IGN, the hearsay was fueled by a combination of playground whispers and the lack of accessible internet resources to verify secret content. For many, the proof seemed to be etched in the game itself, specifically on a sign located in the courtyard of Peach’s Castle.
Decoding the "L is Real 2401" Sign
The speculation centered on a practically unreadable sign in the courtyard of Peach’s castle. Players interpreted the text as "L is real 2401," leading to elaborate theories about how to unlock the secret character.
"It was the era of secrets that you couldn’t just look up on the internet. It was the era of myths about video game easter eggs that you would whisper to each other as you were playing, or you would talk about them in the playground. Everybody had a theory about where Luigi was in Super Mario 64," said Tom Phillips, news editor, via IGN.
Fans hypothesized that the "2401" referred to a specific requirement, such as collecting 2,401 stars or performing 2,401 jumps in a specific spot.
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Why Luigi Was Left Behind
In an interview for the game’s official Japanese strategy guide, creator Shigeru Miyamoto explained that the team had been forced to omit Luigi, stating that “ultimately, due to memory issues, we had to take him out.”
"Ultimately, due to memory issues, we had to take him out.
The myth of the "hidden brother" remained a staple of 90s gaming culture. According to IGN, the sheer volume of secrets buried in the game made it easy for players to believe that Luigi was simply waiting to be discovered.
The "Gigaleak" and the End of the Bounty
For 24 years, the $100 bounty remained unclaimed, serving as a testament to the community’s inability to find the missing plumber. The status of the quest changed only after the 2020 Nintendo "Gigaleak," which exposed the company’s internal source code to the public.

As noted by IGN, the source code revealed a lead: Luigi was there, hidden in a place where nobody could look. This discovery provided the closure fans had sought since 1996.
Final Reflections on a Gaming Legend
The legacy of Super Mario 64 is inextricably linked to the curiosity it inspired. "It’s a remarkable game. I was in awe," said Douglass C. Perry, IGN co-founder.
While the bounty is now settled, the story illustrates a unique moment in history before the rise of comprehensive online wikis and instant data mining. The community-driven pursuit of Luigi highlighted the collective imagination of a generation of players who viewed their games as worlds containing infinite, discoverable secrets.