The NES, SNES, N64, Game Boy and DS were all big sellers in one way or another, so why would a product come along to give them so much trouble?

FORBES: The Only Problem with Nintendo's 3DS

Whereas the Game Boy, Game Boy Advance and Nintendo DS were met with universal success, the Nintendo 3DS is currently sitting on store shelves, waiting to be purchased.

FORBES: Is Nintendo Jumping The Gun?

When you think about it, the last two generations of handheld gaming (chiefly Nintendo DS and starting with Game Boy Advance) got flooded with more casual gamers than any of its predecessors, like Game Boy and Game Boy Color.

FORBES: Playstation Vita Sales Skyrocketing After Price Cut

It is fully Game Boy Advance compatible (it has a slot for the carts), and has a DS cart slot to take advantage of the new dual screen features as well.

ENGADGET: Live from E3: Day Two