There is a glitch in SMB1 where if you hit a block with an enemy and a power up on it at the same time, the mushroom will fall through the block and sometimes the enemy falls through. I was wondering if anyone could give me the in-depth/technical reason for why this glitch happens and any information on how to do it, a setup, and anything revolving around it and why/how it happens. if you need specifically the instance of this glitch I would like to know about or want an example, this is a TAS that uses it:
I think the mushroom goes through the block when it bounces up, that would be my explanation.
yeah I believe the mushroom goes through when the block bounces up, but cant figure out exactly why this happens technically.
iirc its because when its bouncing its turned into a sprite and is no longer a solid object
Hello everyone! After careful deliberation and consideration of the recent community vote as well as general community feedback, the SMB1 moderation team has decided to allow Restricted Input Swapping under the following rules:
Multiple input devices and/or multiple keybinds may be used during the





















