Hanabi
Small box, short, cooperative game where you can't see your own cards and give each other clues in order to play all cards collectively in the right order.
Letter Jam
Somewhat similar idea, but in a word game - you give each other clues helping each other guess your letters.
First Contact
A very clever twist on the Codenames formula where one set of players are aliens and the other humans. The aliens can only communicate with a set of funky symbols. The humans need to learn their langauge and give them the right items.
Scotland Yard
One player is secretly moving around the board. Everyone else is trying to catch them.
Mental Blocks
Cooperative, everyone is trying to build a specific shape, but every player has just a specific cross section.
Décorum
Everyone is decorating a house, but each player has restrictions which they cannot share directly but only say that they don't like something.