The Ishar series is undoubtedly Silmarils' most successful games, and rightly so.

Silmarils touted Ishar I when it was released in 1992 as "a new benchmark for RPG"-- a bold statement that turns out to be quite accurate: all 3 games boast exceptional 3D graphics for their times, huge gameworld, alternate solutions to puzzles, and-- best of all-- different personalities and goals of your party members that make gameplay tenfold more colorful and fun. Ishar III is the best of the series, combining the mundane kill-the-bad-guys-in-Ishar plot with time travel elements. Highly recommended.