the save and load script is new, and you can just use it if you are signed in. (pls still dont use it yet) if you want to test things go to the script and click on the stage design. there is aswell explained what will do what thing.
you can find the link to hack up down in the comments i sadly couldnt implement the things into Hack up V2. this is now the game. Saves may not be acurate, but it gets the job done. Version2.2.1 - added new music, still working on load and save. (may be scraped again)