Also if I want I can cross-compile a static build of Frotz for Linux/Misc and emulate it under a RISC interpreter for Linux syscalls written in... Perl, runable in every modern Perl port out there. Linux/RISC binary under Perl for NetBSD/Vax? Yes. Slow? Not much, it's a text game in the end.
But, as for the ZMachine, you can run text adventures in Android, Game Boy, Amiga, MSDOS, Windows, Palm PDA's... anything 8bit and up.
Also, damn Sokoban under Eforth written in Subleq, a VM which can just:
- set up a 2^16 RAM size
- single opcode: substract A from B, if less than 0, go to addr in C. - A < 0? Get ASCII input in B - B < 0? Put ASCII output in B - C < 0? End
This, just this, and people wrote Subleq simulators in C, AWK, Python, TCL, FPGA's and whatnot. And it will run Eforth, and that means... you can write a ZMachine interpreter on it and be really slow if emulated in a Pentium 4 (maybe 3/5 seconds per command with a ZMachine on top of Eforth for Muxleq instead of Subleq), but the game will be playable and a great exercise on Turing completeness.
If a Mandlebrot render under Muxleq+EForth (with no floats used, just integers) is as fast as a C64/Amiga with a native Forth. then having that tiny EForth+Muxleq is not that useless.