Crystals of Arborea is a medieval fantasy role-playing game created by the French studio Silmarils. It was published in 1990 for the Amiga, Atari ST, and DOS.
It is the precursor to the more popular Ishar trilogy, which started with Ishar: Legend of the Fortress. The game was very well received. As in the Ishar games, the player controls a party of 6 characters, but the combat is turn-based instead of real-time.