I haven't played Super Mario World (I definitely want to) or Bowser's Fury, the latter I think isn't worth it considering its short and I've already played SM3DW on the Wii U. I also haven't played SM64DS but I definitely will sometime.
I haven't played Sticker Star, the Origami King, Paper Jam, or the remakes of Superstar Saga and Bowser's Inside Story but I intend to play all of these at some point (I already have a copy of Sticker Star)
I haven't played any of the DKC series pre Returns, but I don't particularly feel like doing so
I haven't played the 3DS remake of the original Luigi's Mansion and I haven't played Dark Moon or Luigi's Mansion 3. The only one I feel like playing is 3.
I haven't played Mario Party 1-5, 7, DS, e, Advance, Island Tour, Star Rush, Super Mario Party, Mario Party Superstars, or the Top 100 (so that is, all of them apart from 6, 8, 9, and 10). I might play some of the others at some point but idk
I haven't played any of the Yoshi's Island Series, don't want to
The only Wario game I've played is the demo of WarioWare: Get it Together. I wasn't pursuaded into buying the full game and also don't feel like trying other Wario games
The only Mario vs Donkey Kong series game I have played is Mini-Land Mayhem. (and I lost my cartridge years ago) I might see if i can get another sometime
I haven't played any of the old Game and Watch or things like the Philipds CD-i games or Mario edutainment games. Also haven't played Mario's Picross. Don't want to play any of these
I haven't played Smash, I would kinda like to but not much.
The only Mario sports game I've played is London 2012. Maybe some other modern sports ones with variety would be nice, but not too keen
I haven't played any of the Mario Kart games besides Wii and maybe the SNES original once. I hate Mario Kart Wii so I don't want to play others
I haven't played Mario and Rabbids Kingdom Battle, but I would like to.
Haven't played Super Princess Peach, I might do sometime.
Haven't played Treasure Tracker, probably will never try.
Haven't played any Dr. Mario games, don't want to try