Crystal Mines II is an action puzzle game released for the Atari Lynx. The game likely features similar gameplay mechanics to the original Crystal Mines, focusing on navigating through mines and avoiding hazards to collect gems or treasures. Information on its exact developer or release dates may require additional research. However, being on the Lynx platform would mean its design needed to adapt for the handheld screen and controls. 

Crystal Mines II (USA, Europe)

Centipede (USA) (Proto)