I got my 3DS XL used and it didn't come with any AR cards, so I just ignored the AR Games App as another piece of Nintendo wannbe-PDA junkware like the crap that came preinstalled on the DSi. Then I downloaded the AR cards, which DO NOT have to be color printed even though Nintendo says they do. Greyscale prints work just fine to shoot dragons and have Mario sit on the couch. Oddly, the orientation of the card did matter: I took an ipad and displayed a pdf of the ? card with the ipad vertical on a stand and the 3ds would not recognize it. However, if you set the ipad on a table, the 3ds recognizes the card image no problem. Looks kind of cool to have a big Yoshi sitting on iPad. But is this it? Just some goofy demos? A few extra movies in Bravely Default? It seems like the cards are just keys: App sees card, app unlocks some sort of easter egg. Are there any games that make extensive and creative use of AR? I can imagine live action versions of hunt-and-peck type adventures or a card programming language.