Recs.
Updated
Keep Talking and Nobody Explodes is an asynchronous party game where one player is trapped in a room with a bomb who has to receive directions on how to defuse it from other players not in the room.
SpecsUpdate
Pros
Pro A unique way to play co-op
One player is allowed to see the screen and hold the controller/mouse, and the other players are not: they must have (digital or physical) manuals for the in-game bombs.
Pro Hilarious situations arise as tension increases
Both sides in the game can not see what the other does, creating a situation of confusion that needs a good bit of team work. A ticking bomb adds the tension needed for players to spit out the first things that come to mind when describing strange symbols or patterns.
Pro Great as a rapport-building game
This entire game hinges on communication skills (and teamwork if you have more than 2 players). The Defuser has to communicate clearly what they see on the bomb, which can be really hard to do properly especially when it comes to arbitrarily-shaped symbols. The Expert(s) have to use this information to derive a solution from the bomb manual, which isn't very straightforward. This process requires communicating back-and-forth in order to get the appropriate information required to reach the solution, which makes this game a great way to improve communication skills and build rapport because you'll need a lot of that to stop the bomb.
Cons
Con Puzzles may become stale after repetitive play
Particular modules in the game may be seen after playing repeatedly, which will make for easier play and quicker puzzle solving. This will have a tendency to make the gameplay feel stale due to ones familiarity with the puzzles.
One example, is the Keypads module where the defuser will need to describe strange symbols. Part of the fun is struggling to describe something, or figure out what is being described and calling the other person an idiot for not getting it.