We all spent hours and hours perfecting Super Mario World, the classic Super Nintendo game that saw Mario fly through Donut Plains, Vanilla Dome, and the Forest of Illusion with the help of his pal Yoshi. But this user-created "Mario World" level entitled "Item Abuse 3" will leave you hyperventilating at your chair as you watch one man use unthinkably difficult maneuvers to navigate the toughest course I've ever seen. It is stressful.

How. What. Why. How.

The valiant player, who calls himself PangaeaPanga, also designed the level itself. Even he took three years to defeat this insane mess. Makes you feel like a total loser for taking so long to beat Ludwig Von Koopa. 

(via Kotaku)