It's fantastic and runs great on the Deck. I kept hearing people talking about how great and unique it was, and I'm really glad I jumped on it when I did.
The game is unique and doesn't really compare directly to any other games I know of. The core game play is kinda similar to a board game, you're building a house layout by choosing between randomly chosen room tiles. In-between adding rooms, you're exploring the house in first person, and solving puzzles on the way. There's also a resource management system, where you sometimes need a keys and other resorces to progress into new rooms. At the end of the day the mansion resets and you start over.
Overall the game is an interesting mix of board games, rogue-likes, puzzles, resource management, knowledge-gated progression, permanent puzzle progression, and environmental story tellings. That's a lot of things, but they work well together and I'm just getting more and more invested in fully exploring this game.
Here's the installation instructions, although the build instructions are not going to work on Steam Deck by default due to it's locked file system. I'll probably try it on my desktop later and see if I can get it to work.
Ideally I think this project could later be installed through a decky plugin, similar to decky framegen.
Edit: It's weird, running it on my desktop it keeps giving an error about failing to create a pipeline. Running it with sudo privileges doesn't give the error, but seemingly doesn't do anything. I don't really have any experience with graphics so I'm not sure what's going wrong.