Crystal Caves
Press Keyboard right side: Alt+Enter keys to switch to full screen game play, and Alt+Enter keys to return.
How to play Crystal Caves
Each game uses different controls, most DOS games use the keyboard arrows. Some will use the mouse.
Crystal Caves Description
Mylo Steamwitz must get all the crystals in each screen ("cave") to win that screen, but this requires shooting foes (with the need to replenish ammo), avoid shooting air supplies, find & turn on the lights, and turn switches on or off. Though mostly straight shoot-em-up, the game does involve some careful problem solving, with the risk of mistakes that make completing the cave impossible. He enters and leaves caves by doors to individual rooms from a central cavern, which doors function in-game as teleportation booths.