Also not OP, but I'll second archagon's list.

If you're specifically looking for something that fits this thread's constraint of visually stunning, one-man indie dev Escher-style puzzle game, I feel an obligation to point you at Antichamber [0].

It's got some of Echochrome's starkness to it, but with some very nice writing/dialog(?) bits that play off the game's puzzles well. Most people will find something delightful about it, though be ready for a slower paced, introspective game. It knows you know it's a puzzle game, and will punish you for it :)

(I should note that Antichamber seems to have been in development before Echochrome or Fez, and as such likely deserves the originality that has been showered on it.)

[0] http://www.antichamber-game.com

I suggest http://wiki.xxiivv.com/Oquonie ... Strange noneuclidian maps and very distinct art style - takes a while to understand the logic behind it.

Not OP, but you should totally try Windowsill, Botanicula, and EYEZMAZE's series of GROW Flash games. :)

Oh, and Fez, of course.

I was super excited about Fez because I loved the art style. But after twenty minutes of playing, I gave up, totally disoriented. I have a terrible sense of direction in general and that game was just me wandering around lost and miserable. :(

For me it was the first puzzle. The mechanics weren't clear and I had several glitches. The rest of the game was alright, but quite overhyped. I liked The Floor is Jelly a lot more, but it didn't get as much attention. Sometimes it pays to be a drama queen.

You can't reasonably make the claim that Fez became popular because Fish was a drama queen! It got excellent reviews and won many awards and contests. Personally, I think the attention was warranted.

I was probably not completely fair. But I really don't think Fez would've gotten the attention it got without Fish, and a bug ridden game like Fez makes me question the reviews. The gap between press reviews and user reviews on Metacritic seems to confirm my point.