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

[TheRealSamusAran]

Wman1996 said:

TheRealSamusAran said:

The NES, N64, and Wii were all very groundbreaking in their own right, but here me out;
The Nintendo DS is the first touch screen device of mass market adoption in history. It preceded the iPhone by 3 years. And that's not even to mention how novel the idea of 2 screens was. And the DSi was the first Nintendo device with an eShop, that was groundbreaking for Nintendo at least.

Wii Shop Channel (and WiiWare) predate the DSi Shop.

Right you are, I thought the DSi preceded WiiWare by a few months, but it was the opposite.