A Short Game of Collaborative World Building and Candy
From the introduction:
Rainbow World is a colorful and varied place with an exciting and complex history. Beyond that any details are up to you and your friends. This is a game that helps you rapidly go through the process of creating a fictional world, brimming with as much interesting detail as you want. Rainbow World is an imaginary sandbox that you can build up, knock over, and rebuild as many times and in as many different ways as you want. Players don’t really win or lose Rainbow World; it’s a cooperative game about creativity.