My top 5:
1. Stardew Valley
2. Pokemon Crystal
3. Animal Crossing New Leaf/GCN (it's a tie, really)
4. GTA San Andreas
5. The Dog Island (ahhhhhhh so nostalgic and sad ;~; )
Right now, my favorite game is Dynasty Warriors. I love that game, lol. I started playing it from Dynasty Warriors 5 and the game stuck with me ever since. I'm waiting for Dynasty Warriors 9 to come out, and I can't wait!