"Math Rescue is an educational platform game created by Karen Crowther (Chun) of Redwood Games and released by Apogee Software in October, 1992. As the title suggests, Math Rescue revolves around solving math problems. There are floating boxes in the air, which, if touched, will transport the player inside it, where they must solve a math problem to get points. Math Rescue includes 3 episodes, with only the first episode distributed as shareware, and the rest available commercially: * Episode 1 - Visit Volcanos and Ice Caves * Episode 2 - Follow the Gruzzles into Space * Episode 3 - See Candy Land Apogee still sells the registered version of this game. The game is followed by Math Rescue Plus." Source: Wikipedia, Math Rescue , available under the CC-BY-SA License.