I totally agree with you! Music from games is often underrated, but it can be absolutely fantastic. I have some favorite songs from games, too. Here are some of them:
"To Zanarkand" from Final Fantasy X.
"Ezio's Family" from Assassin's Creed II.
"Still Alive" from Portal.
"City of Tears" from Hollow Knight.
These songs are really memorable to me because they enhance the game experience and are great pieces of music in their own right. Especially they are great for playing online projects, yesterday was a great day at all, I found here Winaday no deposit bonus and then was able to win money in this game. It's amazing how game soundtracks can evoke emotions and become so memorable. I love listening to them even outside of the game. By the way, thanks for sharing your favorites! I'll be sure to check them out.
