Ganni1987: Metal Mutant was my favorite game by Silmarils. I sucked back then an barely knew what I was doing :D
Metal Mutant was the first game which my parents decided to ban for 5 yo me ("Before PEGI" system :))
Also, there was one, barely forgotten -
Starblade. It was difficult as all Silmarils games, but had beautifully created "worlds".
But the most memorable one is - I guess - Colorado. After many years I've found that specific atmosphere of pioneers in last act of Red Dead Redemption (in mountains)