I would like to mention one of my favorite and at the same time the most unknown game. I bet none of you have heard of the Q.U.B.E. series.
This series, consisting of almost only two parts, captivated me with its plot, atmosphere, and especially soundtracks, which I included in my personal "top 3 best game soundtracks".
This is a puzzle game, where you have to solve puzzles in a place made entirely of cubes using special gloves. And all this is seasoned with a tense but very exciting plot. Personally, I am very disappointed that so few people know about such a wonderful game. But I hope it will be of interest to some of you.