The Creator mode was a planned update that would allow Bscotch-ID users to create player-made storyline campaigns and worlds in Crashlands. It has been cancelled by the developers. Check out more information on https://www.bscotch.net/support/crashlands/creator
Old plans: It will allow players to change and customize mechanics of the game as well as including a sandbox mode that is less story focused and allows players to play, explore, and craft at their own leisure. Custom mechanics will not affect the main storyline campaign. Some of the customizable mechanics in Creator mode will include options for permadeath, excluding certain craftable items from the custom campaign, pernemant night, enemies alway instantly killing the player and creatures attacking each other. It will be the first major update after launch.