I was casually screwing around with a HEX editor, and discoverer that if you change any block to an unknown value, the sprite stays the same, but the block functions as a vine block, allowing you to zip right through block from the left. Examples of an unknown value would be 34, 99, and o. Thought this was a pretty fun thing, so I am here sharing it. Have a nice day! :)

mechanic literally changing ROM data

cool discovery

This wouldn't be allowed in runs, but nice. SeemsGood

@Mars02 when did I say that this would be useful in speedruns? kappa