The Mask Of Atlantis
The Mask Of Atlantis is a 2014 ZZT world authored by Jorge Nuñez and Mikel Calvo. Based on an experimental film directed by Nuñez, it features unusual design and extremely sparse map layouts. The game has 85 boards total, several containing no active objects other than the player, and some not accessible at all without using cheats.
The game (available in both Spanish and English), the original movie, a fanzine, and a hand-drawn map can all be found on the game's Itch project page. There is also an entry for the game on Museum of ZZT.
Next actions for this page: Add map and walkthrough (to the best of my understanding) to this page as soon as I have some time to go through my notes and screencaptures.