Livestream of the Super ZZT world "Mutant Citadel" by verasev (2021)
A sci-fi action game inspired by modern Doom games, and yet... it's made for Super ZZT? The engine is tweaked in some small ways to raise memory limits and prevent objects from ripping and tearing each other to pieces by preventing objects from shooting objects, but it feels very vanilla Super ZZT.
The gameplay itself is just a little too obtuse which makes fully grasping this game a bit more difficult than it should be. It has systems for multiple types of ammo, and armor which can provide "enhancements", but the details of these are never made clear resulting in kind of just hoping things work out for the best. With some more clarity this could be a pretty solid action game, something the Super ZZT medium lacks, but in its current state it's difficult to feel like your choices matter until you run completely out of ammo that is.