Zoma is a 2003 tile-matching puzzle game developed by Oberon Media and published by PopCap Games. The player can carry two balls at a time and can switch at any time. As soon as one ball reaches the skull, the others follow and the player loses a life. To prevent the balls from reaching the skull, the player can eliminate the balls by firing a colored ball from the stone frog idol's mouth towards the chain of balls that will continue to push forward until the player fills the bar, which is when the balls will stop producing off-screen.