BLJdle uses libsm64 with a standalone Mario asset loader.

Space Grotesk: https://github.com/floriankarsten/space-grotesk
  SIL Open Font License 1.1: assets/fonts/SpaceGrotesk-OFL.txt
  Variable font bundled locally; no external font request is required.

libsm64: https://github.com/libsm64/libsm64 (CC0-1.0)
Webrio interface: https://github.com/osnr/Webrio
Browser WebAssembly distribution: https://github.com/zalo/libsm64-three
  vendored src/webrio.js and src/webrio.wasm
  MIT notice: vendor/libsm64-three-LICENSE.txt
Three.js r166: https://github.com/mrdoob/three.js
  MIT notice: vendor/three-LICENSE.txt

Mario model geometry is compiled from the decomp source. The bundled
texture atlas and 209 animations in assets/mario.bin were extracted offline
from the user-supplied original US ROM. The full ROM is not bundled.
The extraction manifest is assets/mario.json. No ROM is needed to play.
The original game's characters and assets belong to Nintendo.

Chart.js 4.6.1: https://www.chartjs.org/ (MIT)
  Local UMD distribution: vendor/chart.umd.js
  License: vendor/chartjs-LICENSE.txt
@kurkle/color (bundled in Chart.js): MIT; vendor/kurkle-color-LICENSE.txt

BLJdle native climb runtime: built from libsm64 commit
fd11813208272b4271d92bd92feb8f3fdbe61be5 (CC0-1.0), Emscripten 6.0.13.
  Source/build instructions: native/README.md and native/build.py
  Output: vendor/bljdle-native.mjs and vendor/bljdle-native.wasm
  Original bridge and procedural stair course: native/bljdle.c