Another amazing one. The labyrinth mechanic really makes this one shine.
Mysterious atmosphere, interesting story, cool puzzles and exploration, like the other ones. The unique mechanic in this one is this tile-based map that controls the corridors and tunnels outside of certain checkpoints. It's a quite cool mechanic, and employed effectively too.
This one is a bit less "carefree exploration" than the other two I've tried, but it's still quite cool.