Nice; here there is one made in POSIX AWK:

https://git.luxferre.top/dale-8a/files.html

BTW, kudos for the author for playing Anchorhead too :D. The ZMachine is one of the things I love too among minimal VM's.

Another nice one it's mu808, but sadly it needs some quirky stuff to handle bufferings https://codeberg.org/luxferre/mu808

The author could rewrite in TCL/JimTCL and forget about buffering.

On the software for it (IV0 actually), the offer looks more limited than the CHIP8, but the opcodes and implementation are much easier to understand (no pixels, just raw I/O, even chars). Enough to implement Lunar Lander, some calculator, a Bulls and Cows game and so on.

Altough after trying something like EForth running under Subleq (Muxleq was tons faster), I can say Eforth offers you a much more powerful language having to thinker with Muxleq, altough the IV0 machine (and a few ones such as VTL-02) will run under 6502 based legacy microcomputers, such as the Kim-1 or the Apple1, C64, Apple 2 and so on. With mu808 I still coudln't output strings bigger than 9 chars. With EForth under Muxleq you can run a Sokoban like nothing.