Hi there @Gzxyx sorry to hear the world file seems to have become corrupted. Hopefully you have a backup file to restore from (backup files and the file structure is explained here: Mobile - Terraria Mobile 1.3 Local File Structure, Explained and here Mobile - Terraria Mobile 1.3 Backup/Restore Instructions for iOS Mobile - Terraria Mobile 1.3 Backup/Restore Instructions for Android). If you don’t have a backup to restore from I’m sorry there’s nothing that can be done for your file.World with 100+ hours on crashed during world save and now is unplayable (the world became a classic mode world and an unkown world)