Stoneloops! of Jurassica is a color-matching game with a prehistoric theme. Each level has a winding path that occupies most of the screen. Inside it, groups of colored rocks roll slowly towards the skull that marks the end. If the stones reach the exit, the game is over.
The player must make matches of three or more stones of the same color, by collecting one rock at time and throwing it back with a device at the bottom of the screen. This rock launcher moves left and right with the mouse, rearranging the rocks to eliminate them from the field. The objective is to fill a meter at the bottom of the screen with each successful match.
The game has 3 modes. Classic mode has 75 levels with normal gameplay. Strategy is a puzzle-mode, where the rocks only start rolling when the player makes a move. In survival mode the player chooses a previously completed classic level and tries to make a high score, only this time the level only ends when the rocks reach the skull.
Power-ups appear randomly. Flying spears break the rocks. A pterodactyl swoops down and destroys several stones. A lightning bolt eliminates a line of rocks. The boost power-up increases the level meter. A cloud paints all the nearby stones the same color. A stop sign freezes the rocks movement. A meteor and fireball explode a group of rocks. A multicolor rock can match any color.
In late 2009, the iPhone port was pulled from the AppStore following a complaint of copyright infringement by MumboJumbo. One of the developers of the game, Maciej Biedrzycki, wrote about the situation on his blog: "If you are a developer and have an application in the AppStore you should quickly request Apple to remove the apps of your competition, before someone else requests to remove you! I don’t believe this can get any more absurd, but this is exactly where this reasoning is getting us."