Which do you think is Nintendo's most groundbreaking system, and why?

[SvennoJ]

Pemalite said:

WiiU.
Not only was it the platform that gave the Switch it's best games...
But as a hardware concept it laid the foundations of the Switch with it's Tablet gaming credentials being the first "Nintendo Hybrid" device.

I would say the Wii in that case, since the Wii started Nintendo's new trend not to chase the power consoles and laid the groundwork for unifying handheld and console in one Hybrid device. 

Plus without the success of the Wii, the WiiU wouldn't have all those games to give to Switch.

Switch actually went backwards on the WiiU. No more secondary screen, no more map / inventory in your hand. WiiU was a dual screen system.