Multi Jumping is a flexible surface that people can jump on, and sink or jump higher than usual. 

When you stand on Multi Jumping, the surface beneath your feet sinks, creating warps in space and time. This distortion attracts stardust from the universe and births new stars. If you jump on top of a star, it begins to move, and if you continue to jump on the star it will grow and you will be able to experience the entire life cycle of the star. When the life of the star ends, it returns to stardust and becomes the building blocks of new stars.

A gigantic and heavy star will eventually become a black hole that swallows up all the surrounding stars and stardust.