So that's why Super Mario Maker was offline...

[CM30]

http://kotaku.com/the-surprising-story-behind-mario-makers-emergency-main-1755715968

Apparently, a glitch let you download levels from the server, edit them, and then somehow use the edits in the 'live' version, despite it not being your level. You could basically break world records by sneaking items, power ups and level changes into difficult stages and bypassing the obstacles.

Nintendo just thought this glitch was too much of an issue to leave alone, so took down the servers a bit longer in order to fix it.

 

[Demon_Skeith]

Shame Nintendo didn't better thank the guy. I don't think anyone will go to such lengths for the next found bug.

 

[OMDO]

Yeah, the worst part is being basically rude in their acknowledgement of the video.

I am really glad that it got patched out, though. I really enjoy making levels that mess with people, and cheating around them is no fun for me as a level maker.