I have only read the first end of the article but I can't help but think that a project like libriscv[0] would've/could've worked for their game project too because fun fact but the creator of librsicv, the legendary fwsgonzo is also making a game. I highly recommend for people to check out their discord server.

But my main point is that libriscv is one of the fastest libriscv emulators and then something like C/C++/lua could've been used with sandboxing purposes for the purposes of the game then.

Am I missing something? Although, making a programming language is one kind of its own projects and that's really cool as well :-D

but I would also love to hear the author's opinion on libriscv as it feels like it ticks of all the boxes from my understanding

[0]: https://github.com/libriscv/libriscv