GamesPlatformerSuper MarioSuper Mario 64It took almost 28 years, but Super Mario 64 players have finally opened an “unopenable” door - using a penguin and a sick backflipWhen you purchase through links on our site, we may earn an affiliate commission.Here’s how it works. GamesPlatformerSuper MarioSuper Mario 64It took almost 28 years, but Super Mario 64 players have finally opened an “unopenable” door - using a penguin and a sick backflipWhen you purchase through links on our site, we may earn an affiliate commission.Here’s how it works. When you purchase through links on our site, we may earn an affiliate commission.Here’s how it works. (Image credit: Nintendo) It’s been almost 28 years, but Super Mario 64 players have finally figured out the impossible. A door which was previously thought to be unopenable has been opened, all thanks to an angry penguin and some fancy footwork. A lone cabin door at the bottom of Cool, Cool Mountain has sat taunting us …