Quest for Glory is an adventure game. One of the best games I've played. You can choose to be either a Fighter, Magic User or a Thief.
See also: Quest for Glory V: Dragon FireCompatibility
From my experiences:
Will work with Mac OS 9 *if* you disable all extensions at boot (hit and hold shift during system startup). I have seen it work on an LC and LCIII - it's slightly slow at the 16Mhz LC speed. Runs great at LCIII speed (25Mhz). Works on 512x364 (12" monitors) and 640x480 monitors (13"). May run in a higher resolution - but not tested.