Planet Drop is a space themed version of the popular game "Suika Game".
The game is played by dropping planet textured balls on top of each other. When two same type balls touch, they merge and become the next biggest planet of the solar system.
The game is won after two of the biggest planet balls (Jupiter) merge and form the Sun.
The game is lost when any of the planet balls touch the barrier for more than one second. This causes all progress to be lost and the game to restart.
The game also has a cheat function by which the player can choose a cheat and watch an advertisement for the reward.