forge-wasm
I’ve been working on getting MTG Forge (a 15+ year old Java Magic: the Gathering rules engine) to run in the browser. GraalVM’s new WebAssembly support finally made this possible, and we now use it for local games in Manabrew. We also packaged the Forge build as @manabrew/forge-wasm (AGPL). https://manabrew.app/blog/graalvm/