Due to its scarcity and unique gameplay, Crystal Mines for the NES is considered a collector's item. Color Dreams, an unauthorized game developer without an official Nintendo mark of excellence, released the game in limited quantities. Crystal Mines is a puzzle game in which players must negotiate increasingly tough stages. While the game did not earn great critical praise upon its initial release, its scarcity and cult appeal among puzzle game fans have made it a sought-after item among collectors. Finding a decent copy of Crystal Mines in good condition can be difficult, increasing its value among collectors.