Interesting starting list; several games I enjoyed on there.
Methyhel (and even the text-only Methyhel 128K) is the superior version of Nythyhel, in my opinion; although is Spectrum only.
Pretty much all of Jack Lockerby’s games are good value. He was a master of non-frills, puzzle-based text adventures. As you found with The Bounty Hunter, his early titles exist in several formats… Quilled versions for the Spectrum & C64, PAWed versions for the Spectrum only, and STACed versions for the Atari ST… There are differences in maps and gameplay, so solutions that work on one won’t work on the others.
It’s not easy to find games made with those systems on the IFDB, so if anyone is struggling then try our lists at CASA…
If it’s a Spectrum game then you can easily play it through your browser using the facility at Spectrum Computing https://spectrumcomputing.co.uk/ … just search for the game, click through, scroll down and click on the QAOP link.