Show HN: I reverse-engineered Mewgenics (game) to build a luck/RNG calculator

1 points by causalzap a month ago · 0 comments · 1 min read

Hi HN,

I’ve been playing the beta of Mewgenics (the new game by Edmund McMillen, creator of The Binding of Isaac) and got frustrated by the opaque RNG mechanics. The game has a "Luck" stat, but it wasn't clear how it affected success rates.

So, I decided to dig into the game files (classes+Misc.txt, events.csv) to reverse-engineer the hidden formulas.

I built MewGenius to visualize this data. It's a static site built with Astro + React.

Technical challenges I solved:

Reverse-engineering the RNG: Discovered a hidden "Reroll" system where Luck 15+ gives you two dice rolls, drastically changing the probability curve.

Genetic Simulation: The game has dominant/recessive traits. I built a simulator to flag risky breeding pairs (inbreeding/diseases).

Data Pipeline: Wrote Python ETL scripts to parse the raw CSV/Text game dumps into structured JSON for the frontend.

It's still a work in progress, but the Luck Calculator is fully functional. Would love any feedback on the tool or the UX!

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