Example: The King In Yellow Borders, a horror game: https://stale-meme-emporium.itch.io/the-king-in-yellow-borde...
The other massive shot-in-the-arm for ZZT was asiekierka's disassembly and reconstruction of the original Pascal source code: https://github.com/asiekierka/reconstruction-of-zzt (Tim Sweeney allowed the reconstruction to be released under the MIT licence.)
As an accidental 30th birthday celebration, the community remixed the first world - Town of ZZT - and Dr. Dos livestreamed the first half of it just the other day: https://museumofzzt.com/file/t/TOWNRMIX.zip
Also, Dr. Dos was recently interviewed on "Preserving Worlds", discussing ZZT, the Museum, and Zeta: https://www.youtube.com/watch?v=JhCYQI_XBl0