Reveal the Deep
Thumbs up? Thumbs down? I guess thumbs up. It's an atmospheric adventure game, with a few puzzles, which rewards exploration. You could probably predict the story's end from the very start, but that doesn't mean it's bad. It also doesn't meant it's good: the game is very short, and though it's nice, make sure not to pay a lot for it.
Also make sure to take notes as you go along. The final puzzle is non-trivial and requires close attention to one of the clues.
I'd like the thank the developer for supporting Linux!