I'll start with mine.
Probably would have to be a tie between mystery dungeon explorers of sky and super mystery dungeon. EoS was one of my first games, so I love it for nostalgia reasons, bet even on my replay it's still as good as I remembered.
SMD was amazing. I loved how the game looked, played, and feeler. It was just stunning how great this game was. Only thing is: tone down the difficulty.