Planet Turtle offers various one-player and two-player games which reinforce and test elementary-level math knowledge as taught in McGraw-Hill textbooks. The website offers both timed and untimed games of different types, including straightforward math question games, number clue games and competitive games. As students play and master more math games, Planet Turtle automatically offers more challenging, higher-level games.
One Planet Turtle game is "Lillypad Pitcher," a two-part game for one player. In the first part, students answer 10 math questions in an untimed setting, earning bonus points and extra time for correct answers. In the second part, the time players earned in the first part is used in a game in which they throw stones into a pond, hitting targets in the water by adjusting the pitch and power of their throw.
One of the two-player games on Planet Turtle is an arcade-style game called "Dune Balloon." Each student is given a number of sand castles at one end of a beach, and the object is to throw water balloons at the other player's sand castles, destroying them, before the other player destroys his. The game does not directly ask any math questions, but it does train students to use estimating skills, geometric reasoning, basic counting, addition and subtraction.