Decomp Academy – Learn to decompile GameCube games into matching C

Over the past few months I've been heavily involved in the decompilation community. I've been hands-on decompiling a beloved game from my childhood (Star Fox Adventures). I started this journey with zero prior decomp experience—and to make things worse I had never really touched C nor assembly either.Learning how to decompile was challenging. It's difficult to find any good learning resources for it and any open-source projects for this are inactive and/or contain little actual learning material.So I put together Decomp Academy! Decomp Academy is an interactive way to learn how to decompile PowerPC assembly back into C. The site runs a live Metrowerks CodeWarrior GC/2.0 compiler, converts your C into assembly, and then checks how close your assembly matches the target. If even 1 instruction or bit is off, that's a fail. This is the gold standard for video game decompilation and this is much stricter than a normal decompile.As of writing there are 250+ lessons on the site and the lessons start at the very basics so anyone with a little programming experience should be able to jump straight in, even if you're not a C expert. Some lessons also have real functions taken from live open source decomp projects (Star Fox Adventures, Mario Party 4, Pikmin, Metroid Prime). The idea being you learn everything you need to know to be able to jump in and contribute to a real decompilation project when done.The site is completely free, open source and you have access to all lessons without having to sign up. All lessons are stored in markdown in the repo (src/curriculum), it's trivial to add or modify lessons. The site is very new and the lessons are rapidly changing every day with a whole C++ section on the way. The site has already been well received by the decomp community and I'm happy to share it with HN. I'm very keen on others to contribute to this project and I hope this becomes the best resource on the internet for le

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FL score

65

out of 100

Verdict

VALIDATE

medium confidence

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An interactive platform teaching how to decompile GameCube games from assembly to matching C code with strict correctness checks.

The pain

There are very few quality learning resources or active projects for learning game decompilation, especially for PowerPC assembly and C, making it hard for newcomers to contribute to open-source game projects.

The gap

Existing resources are inactive, incomplete, or too advanced; no interactive, step-by-step platform exists that teaches decompilation with real-time feedback and strict correctness standards.

Build angle

Focus on building a comprehensive, interactive curriculum with real-world examples and automated correctness checks, while growing a community around contributing to open-source game decompilation projects.

Strengths

  • Addresses a niche but passionate community with clear unmet educational needs.
  • Interactive, hands-on approach with real-time feedback is rare and valuable.
  • Open source and free access lowers barriers to entry and encourages contributions.
  • Leverages real game functions from known projects, increasing relevance and motivation.

Risks

  • Very niche market limits growth and monetization potential.
  • High technical complexity may deter casual learners despite efforts to simplify.
  • Sustainability depends on ongoing content creation and community engagement.
  • Unclear path to revenue or scaling beyond hobbyist/decompilation enthusiasts.

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