Latios212
2006
It's got a stellar soundtrack, a deep and engaging story, and beautiful pixel art that is expressive enough to convey so many emotions. The gameplay is the best in the series, due to a combination of good balancing of enemies/items and reasons to replay dungeons. Additionally, the content tacked on from Time/Darkness is significant, adding more fun game mechanics and story content that feels genuine. The pinnacle of Pokémon games and a guaranteed spot on my top 5 list.
2008
2008
2007
1981
2020
2016
Deserves massive credit for bringing the world together. You could actually go out on the street and have a shared social interaction with strangers... what a magical time. The actual game was nothing special, but the whole location tracking thing was really cool at the time, when the servers weren't crashing.
2005
After not caring that much for Gates to Infinity, I was overall quite happy with how Super Mystery Dungeon turned out. I fully enjoyed it, and the ending hit hard as usual. I don't remember going back to play it very much though - nothing like I did for Explorers. Thinking back, I feel like this might have been the last released Pokémon game I was really happy with until Legends: Arceus.