Not familiar with Master System games, but played the ROM version of it from GOG, and it was pretty fun. However, it is a puzzle game and a slow burner on top of that, so maybe that’s what puts you off?

DRM free multiplayer? What sort of abomination is this? (sarcasm)

Jokes aside, hopefully it helps setting a precedent. Hate the view that even some alleged DRM free stores have that multiplayer that can’t be self-hosted isn’t DRM.

Tip for those interested:
Wordpress has RSS feeds by default, even if omitted in the UI =)