Two titles that sprang to mind for me were Witness and Happy Salmon.
The noteworthy part of Witness can be somewhat reduced to the old children’s game of misheard whisperings – but here in the form of a mystery game and logic puzzle for adults… certainly I haven’t seen another boxed board game like it.
Happy Salmon is a game-ified celebration.
Edit: Light Speed is another that I can’t compare with anything else… a real-time card game where you can play cards anywhere on the table at any time as quickly as you wish, with the round ending as soon as one person has played all their cards (no one else gets to play any more cards), and with the actual outcome based on the precise position and angle of the cards in that final state (which you check in a particular sequence, with each card representing space ships with shooty lasers which you extend outwards with a ruler to see what they are hitting (or missing, or being blocked by a shield)).