// the find
ipodtouch0218/NSMB-MarioVsLuigi
Standalone Unity remake of New Super Mario Bros DS' multiplayer gamemode, "Mario vs Luigi"
A standalone Unity remake of the Mario vs. Luigi multiplayer mode from New Super Mario Bros. DS, playable online with 2–10 players. It's a fan game, not a library or tool — the value is entirely in the playable experience and the source code as a reference for Unity multiplayer game development.
The networking architecture using Unity 6 and what appears to be a custom or Fusion-based netcode setup for 2–10 concurrent players is genuinely non-trivial to get right in a platformer. The addon system (Assets/Addons/) with self-contained JSON manifests for custom levels is clean design that makes community contribution tractable without touching core code. Internationalization coverage is exceptional for a fan project — 30+ locales with dedicated translators, Arabic RTL support via a bundled ArabicSupport library. Active development (last push 2 days ago) with a sizable contributor community and structured QA process.
Nintendo IP means this gets a takedown notice the moment it gains too much visibility — there's no legal path forward and no way to commercialize or redistribute assets. The project vendors third-party extensions directly into Assets/ (Graphy stats monitor, ArabicSupport) rather than using Unity Package Manager, which will cause version drift and merge pain. As a Unity project, the useful 'code' to learn from is buried under gigabytes of binary assets, animation controllers, and .meta files — GitHub is a poor host for this and the repo will bloat over time without Git LFS discipline. No documentation on the networking architecture, so if you want to learn how the multiplayer actually works, you're reading source with no map.