This is a simple, mesmerizing and relaxing game for everybody; even a 3-year old can play. Just swipe the balls of on the board and let the fusion process take over; No math is required. You win after you get the biggest ball.
About the name: scientists say that all the marvelous elements in our Universe were created by a fusion process after the Big Bang. This game essentially simulates that process - getting bigger elements (balls) from combining the smaller ones.