Crystal Mines II

Crystal Mines II is a puzzle video game designed and programmed by Ken Beckett for Color Dreams and licensed to Atari, who published it as a cartridge for their Lynx handheld system. The game was also released on the Gameboy. The game is a sequel to Crystal Mines for the Nintendo Entertainment System. Both releases are similar to Boulder Dash, a genre which has since become known as "rocks and diamonds" games.

The Lynx game features 150 levels and 31 bonus levels. The levels were designed by Scott Davis, Danny Sosebee, Lee Rider, Joel Byers, Jim Treadway, Gabriel Beckett and Ron Degen. Music was designed by Ken Calderone, and graphics were by Nina, Dan Burke and Ken Beckett.