Check out this no-longer-in-development Cyan game
Cyan, the game development studio behind Myst, recently had their yearly fan get-together, where they announced a lot of stuff and released a trailer for Project Anglerfish, a Myst-universe game that they began work on several years ago and are no longer working on.
It's hard to call this game "canceled" when the developers themselves very conspicuously never use that phrase while discussing it. They apparently worked on this for four months. (There is stuff in here that looks insanely good for four months of work.) If you'll recall, there were some Cyan layoffs in 2025 - at one point half the studio, about twelve people, were laid off. The remaining staff is now working on something else entirely from the Myst universe.
Anyone who's worked in the games industry long enough has seen stuff like this happen and can probably guess what happened here. Maybe even most of us know what it feels like to work on a game, and then lose/never obtain funding, lose the game, and lose your job. It's bummer shit!! The graveyard of never-even-hit-full-production games is massive and footage rarely hits the public.
It is genuinely cool that Cyan wants to and is able to talk about this. The fact that Cyan felt comfortable showing all this old footage and talking about this and other unreleased games does say a lot about them as a studio, about the behavior of their fans, and about the rights situation they're in with their projects. Most studios don't want to show the public their failures - if they're even allowed to! I do recommend reading this post about the event from Andrew Plotkin if you're curious what kind of get-together the event is and what kind of relationship the studio has with its fans.
I don't expect this to happen any time soon, but it would be insanely good for the industry to more commonly let laid-off workers speak directly about canceled projects. It could in certain cases be lifechanging for workers to have a public gameplay video to share as part of their job search. I know people whose work history is NDAed to hell!