http://www.slate.com/articles/technology/gaming/2015/09/super_mario_maker_it_s_not_just_about_building_your_own_mario_levels_it.html

I want to design a level in which Mario can only jump once. Not like one of those “automatic” levels you may have seen on YouTube in the past few weeks, ones in which Mario is bounced, conveyor-belted, and skull-platformed to the end as the player does nothing at all. I want my level to be a light hike: demanding engagement, but also fostering contemplation. The idea came to me as I sat in traffic on the 405 freeway, ruminating on level design and how to make a statement with verticals. But now that I’ve begun bringing my one-jump concept into being, I cannot—cannot—get the first and only power-up mushroom in the right place. I’m this close to giving up on the whole thing.