I love a LOT of video game music (so much that I even created my own blog about it called "Operation: VGM!" which exists to help spread the awareness of video game music to make the genre more mainstream) and it would be next-to-impossible to tell you my Top 10 but I like a lot of 8-bit, 16-bit and modern stuff from Japan, U.K and U.S
Forgot to mention, I was overjoyed to hear some video game BGM during the Opening Ceremony for the Tokyo Olympics during the Parade of Nations!