Crystal Caves - Episode 1-3 © 1991 Apogee Soft.
Crystal Caves is a side-scrolling platform video game, developed and published by Apogee Software for the IBM PC compatibles.
Released on October 23, 1991 (Wednesday) in the USA.
The game was originally distributed under the Apogee model, meaning it was divided into three episodes with the first available as shareware, which designer Frank Maddin said "worked pretty well for the time."