Okay sooo the game is half server sided... important stuff is server side, but still changeable I think, there was a bug recently patched like 2 updates ago so maybe exploitable with a script as it didn’t need a script before, this is the only ever coin hack for Agar.io I promise u bro, you log into same acc on two phones but each phone must be on different servers / dns so it allows multiple log ins at the same time, then u select rush mode on both phones then buy mass boost then back out then go rush then back out and it gives u back double the coins u spent, it has just been patched so no longer works but maybe u can figure something out with that information,
i will explain the skins in a second comment