Watermelon puzzles are developing and expanding, and in the game Merge Happy Planets, nothing less than entire planets and stars will act as game elements. You will easily manipulate them, pushing them against each other. In this case, there will be no explosion; on the contrary, as a result of the collision, a new planet or super star will appear. Naturally, it will be a little larger in size than those that formed it. The field will gradually fill up and your task is to keep the space empty to place as many planets as possible and achieve the maximum mergers in Merge Happy Planets.