By the title, I mean the first two "generations", so to speak, of the GBA and DS Pokémon Mystery Dungeon games. Given that these games are twelve and nine years old, respectively, I feel like the only person left who still goes back to them non-infrequently. Of course, I don't go back to these games too often, because they're the games I spent the most time with in my teenage years by a long shot, but I still think the first two Mystery Dungeon series are great games that deserve all the praise they get.
I was playing MD Blue on and off for a total of about 5-6 years to recruit all 386 Pokémon species, and currently, I'm trying to do the same in MD Sky whenever I feel like taking a break from Fire Emblem. I'd say I'm well on my way, but there's still a lot left to do, like train up a Pokémon capable of learning Fast Friend to completely max stats so it's possible for me to recruit Kecleon. For some reason I started as a Skitty in my current file... even though Normalize is literally the worst ability ever. I'd probably start over again if I hadn't already maxed out my Explorer Rank, cleared Zero Isle (and Destiny Tower, after like 50 attempts) and recruited about two-thirds total of the game's roster of 493.
And for anyone who might be wondering, I don't have much to say about Gates to Infinity or Super Mystery Dungeon. GTI was pretty awful and I didn't find SMD to be much better, but if you've enjoyed those games, that's perfectly fine, they just weren't for me. I picked them up once and put them down after finishing the main stories.