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The hidden graphic Nintendo hoped nobody would ever find
Picture this: you're a Nintendo developer in 2013, wrapping up NES Remix for Wii U. The game remixes classic NES stages with new twists, including a Donkey Kong variant where Luigi steps in as the hero. Everything looks fine. Then someone in the room asks, "Wait, what happens if Luigi somehow reaches the 100m stage and triggers the heart graphic that normally appears between Mario and Pauline?" The answer, apparently, was enough to make the whole team reach for the code editor.
Mario blogger Supper Mario Broth, building on a discovery by Bluesky user DavidPCM, flagged this week that NES Remix contains what they describe as an "anti-brother romance failsafe." Nintendo appears to have preemptively replaced the standard pink heart graphic, the one that floats across the screen when Mario rescues Pauline at the 100m stage in Donkey Kong, with a simple text graphic reading "GOOD JOB!" for any Luigi-led equivalent. The swap exists entirely for a scenario that cannot actually happen through normal play.
Why Luigi can never trigger it anyway
Here's the thing: the whole situation is built on a stage that is structurally impossible to complete as intended. In NES Remix stages Remix 14 and Remix 17, the Donkey Kong layout is mirrored and Luigi replaces Mario, with the goal flipped so Luigi is protecting Mario rather than rescuing Pauline. The only stages visited in these challenges are 25m and 75m. The 100m stage, where Pauline gets whisked away and the pink heart appears in the black sky, is never reached.
So the heart graphic would never fire. Luigi never gets to 100m. Mario never gets saved. The failsafe covers a situation that the game's own structure makes unreachable.
The only realistic path to triggering it would be through a glitch, and even that appears to be covered. DavidPCM noted that the graphic is also completely omitted from the .fcb file for Bonus-4's mission, suggesting Nintendo removed it at the data level as well, not just swapped it in the active stage logic.
What Nintendo actually replaced it with
Instead of a pink heart, the Luigi-stage version of the graphic reads "GOOD JOB!" A perfectly functional message. Encouraging, even. The kind of thing a supportive brother would absolutely say.
The irony is that the conditions for Mario to see Luigi's "GOOD JOB!" message are just as nonexistent as the heart scenario. The graphic was changed for a moment that, under normal circumstances, neither character will ever experience. Nintendo built a solution to a problem that the game itself already prevents.
Supper Mario Broth is careful to note the true intent remains unknown. The developers may have originally planned to make the full Donkey Kong game playable in the Luigi-swap mode, which would have made the 100m stage reachable and the graphic swap genuinely necessary. Alternatively, it could have been a pure precaution in case a glitch allowed someone to reach 100m, specifically to avoid any visual that could be read as romantic love between the two brothers.
Nintendo's quiet attention to detail in a game built on chaos
What makes this discovery interesting beyond the obvious absurdity is what it says about how thoroughly Nintendo thinks through edge cases. NES Remix is a game built around breaking and remixing old NES titles, flipping stages, swapping characters, adding time limits. The developers clearly spent time thinking about every possible combination those remixes could produce, including ones that are technically unreachable.
For fans who enjoy digging into retro Nintendo history, this sits comfortably alongside other oddities buried in Wii U-era software. The platform had a relatively short commercial life, but the games released on it were built with the same obsessive attention to detail Nintendo applies everywhere. This particular detail just happens to be funnier than most.
If you want more retro gaming curiosities and deep dives into Nintendo's stranger design decisions, the gaming guides collection covers a wide range of titles across eras. For something more current, REMATCH is worth your time if you want a game where the unexpected moments are very much intentional, and the REMATCH shooting techniques guide is a solid starting point for getting competitive fast.
