When I Dream is a dreamlike game in which the players take turns taking on the role of a dreamer. That player will then have to guess as many words as possible over the course of a night represented by a timer. The other players are dream spirits.

There are 3 different types of spirits :

1. The fairy assists the dreamer
2. The boogeyman tries to lead the dreamer awry
3. The sandman wants a tie between the right and wrong answers

At the end of the round, the dreamer will recap their dream for the other players ... Then the roles change and a new turn starts...