Heya! Your message motivated me to do it, so I'm happy to announce that the ROM for Dangerous Demolition for Game Gear and Master system are now available here:
https://drludos.itch.io/dangerous-demolition
I'm also working on other versions of this game, that should be released in about a month: Game Boy / Color and Mega Duck / Cougar Boy. They'll be released on the same page when available.
Thanks again for your interested in my games, and I hope you'll enjoy Dangerous Demolition!