203
Super Mario 64's "Unopenable" Door Finally Opened After 28 Years
(www.timeextension.com)
Vintage gaming community.
Rules:
If you see these please report them.
+ the collision is much less of a problem, the issue was that even if you clipped through you had to be in the walking state to open the door (you could clip through before!)
This new tactic involves doing a turnaround, after which for ~1 frame you enter the walking state in midair, allowing you to open the door after being pushed through by the penguin at the right time.