Mario and Luigi partners in time and bowsers inside story are always so fun to replay. They such great music, gameplay and story.
I also like to try and complete the pokedex in old pokemon games, then give up as soon as I finish the game because it's such a grind...
I also like to revisit the pokemon mystery dungeon games because they have quite a lot of replayability.
I really haven't played on my DS or 3DS much since I got my switch... I even got the mario and Luigi remake on the 3DS but haven't finished it yet, which I'm ashamed of...
I need someone to invent time travel so I can finish the hundreds of games.