Asylum

Asylum is an adventure game created by William F. Denman Jr. and released in 1981 by Med Systems (later known as Screenplay) of Chapel Hill, North Carolina for the TRS-80 computer. It combines a text adventure with simple line graphics to create a first-person perspective 3D game. Med Systems had earlier released games like Rat's Revenge, Deathmaze 5000, and Labyrinth with the same kind of graphics; these games were among the earliest commercial examples of 3D games. A sequel named Asylum II was…