This, along with the slew of other announcements from Nintendo, has me really excited about the future of the Wii U.<p>It also scares me. I remember seeing videos of ridiculously challenging Mario stages created by modders (e.g. <a href="https://www.youtube.com/watch?v=3C1BSbq5aB0" rel="nofollow">https://www.youtube.com/watch?v=3C1BSbq5aB0</a>) and trembling in fear.<p>I think Sony announced LittleBigPlanet had something like 2 million user-generated stages? I hope we see something that big with this system, and hopefully a nice system around all the content so awesome content can more easily be fleshed out.