There has been a lot of progress with Custom Level creation on our discord channel by some very smart people. We wanted to add a place to host these levels that users make. It works exactly the same as the park and skater uploads with the exception of requiring a .zip file. Custom levels are also named the same as a "stock" level in thugpro. These stock levels are replaced with the new created level files while thugpro is running. You then load up the stock level that was replaced and the new user created level should load in it's place.
These are completely user generated. You can expect some things to be broken/not work. We urge uploaders to only submit levels that are complete and as free of bugs as possible. Also, if uploaders modify/fix a level that has already been uploaded, they should remove the old version and upload the new version in it's place. Most of us are not professional level designers.. but I would like to try to keep away from having a bunch of broken levels clutter up the upload section.
Thanks to all that have worked on making this possible! If you are interested in making your own levels, join the discord channel!