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Why does PUNCHING Sonic 3D trigger a Secret Level Select?

Coding Secrets · explainer · Watch on YouTube

Speedrunning, glitches & game hackingGame history & retro gaming

What it is

A short Coding Secrets episode explaining why hitting a Sonic 3D cartridge triggers a hidden level select. The cause was a custom crash handler that redirected CPU error interrupts to the level select screen.

Why Hacker News recommends it

Shared as a favorite game-development anecdote with a clear technical explanation.

  • 2 people recommended it
  • 2 different months
  • 0 strong recommendations
  • first 2021, last 2023

What HN commenters said

  1. “For those who don't know, Burton explains this in depth here”

    In-depth explanation of the Sonic 3D secret level select.

    LaserDiscMan, 2021-10 · Recommendation · in “The Coding Secrets Hidden in “Sonic the Hedgehog” [video]”

  2. “One of my favourites is Sonic 3D's secret level select screen”

    Sonic 3D's secret level select screen as a dev anecdote.

    LeonenTheDK, 2023-11 · Recommendation · in “Why does the moon change size when you snipe it in GTA?”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: sonic 3d, sega genesis, easter eggs, crash handler, game history

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