This might be the earliest game that is linked to my existence, as my mother bought a Game Boy and played this while pregnant :). Later on I played the same cartridge on my first gaming console: a green Game Boy Color. I cannot fathom the amount of hours I've played this game in my life.
When going to University, I found my Game Boy Color in a closet. After swapping out the batteries I realized that it still worked perfectly and I played it throughout Uni, sometimes even during lectures. I remember all my friends being excited when I got close to breaking my personal record, it was a really fun time.
Of the recent versions I really liked Tetris Effect (even if only for the phenomenal trailer). Tetris 99 is also pretty cool, but I'm really bad at competitive tetris so I never even got close to winning.