Hi, I hope it's okay to post this here. I've been working on this game for a few months, and it's now ready for public release. It's a sort-of JSW remake, but more of a mash-up of lots of other classic Speccy games. If it proves popular, I'll be slowly adding more and more. It can be played online right here, right now: https://stevesmith16384.bitbucket.io/superspectrumworld/index.html
Here's a short video of a few screens of the game:
https://www.youtube.com/watch?v=fyAr51RcP_k
Cheers, and hope you like it!