"Realms of Chaos is a platform game written for MS-DOS, published by Apogee Software (now 3D Realms). Realms of Chaos was distributed as shareware. It consists of three episodes, with only the first episode playable in the shareware version. The episodes are: * Episode 1: Myraal Realm * Episode 2: Goblin Realm The game is still sold by Apogee. The player controls two characters, a warrior and a mage, and can switch between them at any time. Both characters have slightly different abilities, and players are meant to use a different character for different situations." Source: Wikipedia, Realms of Chaos, available under the CC-BY-SA License.