https://github.com/fwsGonzo/rvscript
This script requires compiling ahead of time. If that is not for you, then you should still be using LuaJIT or v8.
If you like the thought of being able to use C++, Rust, Zig (or any other language capable of producing RISC-V binaries) as script for your game engine, then this is for you!
Having implemented scripting in several ways over the years, this is my favorite so far. Back in the day I wrote my own silly language, before I realized I could use VBscript from .OCX. Once I graduated to C-like languages …