A long time ago, the great wizard Zot forged an orb of power. He soon vanished, leaving behind a vast castle filled with monsters, traps, and great treasures including the orb of power. You play the part of a bold adventurer in search of the orb of power and whatever other treasures you can make it out of the castle with.

Gameplay is similar to a text adventure game. Simple commands are used to move from room to room, consult a map, or look around. Many times though you need only choose from a several options for the current situation, such as during battles. There are vendors you can trade with, mystical pools which can give or take away power, warps to far parts of the castle, numerous monsters to fight and assorted treasures to find.

The Wizard's Castle was originally written for the Exidy Sorcerer and was later ported to other BASIC platforms.