
Crowing
World Ender
Towns Folk

These things were fun. They came with a whole bunch of little minigames built into the 3DS. There were photo modes, too, and a whole punch of other stuff. You could use the ? card to get your Miis to come out into the real world and create scenes with them. You could fish, shoot targets, and so much more... the 3DS had a bunch of cool built-in minigames, Face Raiders was another one, but the AR cards are perhaps the ones I have the fondest memories of.
Do you ever want to see them return in the future? Sadly, the Switch doesn't have a second camera like the 3DS, so it might not be possible for this generation. How about if the made another handheld console? Would you like to see the AR cards return?