EatChildren
Currently polling second in Australia's federal election (first in the Gold Coast), this feral may one day be your Bogan King.
wait, really? both these systems have this feature that no one really knows/talks about....that's crazy. weird to make an easter egg out of these things.
i mean my master system had snail, but it wasn't very good.
In the 3DS it happens every time you hit home while running software. I always thought it was warping the image as is, but I toyed around with the 3D setting and it's pretty clear it's actually taking a snapshot. Easily noticable by turning off stereo mid game, hitting home, turning stereo on, and noticing that the background image does not gain stereo depth. Hit home to unpause the game and once the image returns it will 'flick' to proper rendered stereo.
So yeah, every time you hit home on the 3DS it captures an image of the software you're running. Surprising that this hasn't been implemented into a quick and easy "save to SD card" screenshot tool. The image already exists, so it's not like saving it would chew up RAM.