There's a new Submachine, the latest in a series of point and click adventures created by Mateusz Skutnik. You wake up in an unknown location with no memory of how you got there and of course you have to get out.
a screenshot from the game's beginning
I usually have little patience with browser games, but Submachine is brilliant. The storyline is just vague enough to invite speculation and theories, the mood is nice and creepy and the artwork is unique and instantly recognisable.
And since I'm talking about Skutnik's games, I highly recommend Daymare Town where you have to get out of a town. It's completely surreal and the puzzles are hard, but not impossible. The whole thing has a feeling of Kafka to it. Also, there's a librarian, always a plus for me. Unlike Submachine, the artwork is a series of sketches, which just adds to the surreal feeling.