The debug practice mod for Undertale Yellow. v0.1 through v0.5 were coded by keucher with v0.6 being coded by 32th System. See the pinned messages in the #resources channel of the Undertale Yellow speedrun discord for info on how the mod works, or click this link to go directly to that message. To run the practice mod, move this file to your Undertale Yellow folder and rename it to data.win (make sure to rename your vanilla data.win to something else first!)

New to v0.6: Auto Walk toggle, click to teleport, show collision, show stepcount toggle, and all features from previous versions.

Note from keucher on v0.5:

"this is a prerelease version of the mod; some features don't work yet, and others are buggy. dm me on discord @keucher with any problems you encounter, and i'll do my best to fix them."

Keep in mind that v0.6 was coded by 32th System so keucher's offer might not apply to v0.6