@xenoves got this from Javacord

https://gist.github.com/Specnr/8a572ac5c5cfdb54eb0dc7d1eb2906a3 Instructions: 1) Install Python 2) Download the above file, extract it if it's a .zip, and edit it (right-click > Edit with IDLE) 3) Edit line 6 by replacing the path in quotation marks with your MultiMC instance path. Make sure you're using forward slashes / and not backslashes . That line should end with /instances" 4) Save and close the file. Run it (double-click) whenever you want to delete worlds.