In Yumekaki, players play cards and tell a story that intertwines together. Cards have special symbols in their drawings that tell the player in what way they should tell their part of the story, e.g., telling the story in ten syllables, creating a dialogue with the items in the art, or telling an unfinished story that the next player must pick up. The game ends when players play a card with a popped bubble indicator the second time. The game comes in two sets: the Starbox and the Moonbox. They can be combined for a larger game.