The plaque could be make by splicing a Cave Background Seed and a Door Seed during the weekend it was available. The recipe was replaced with the Happy Joy Plaque which was released directly after the Rollback Plaque was discontinued. Rollback Plaques were originally released as "perma-items," which meant it returned directly to the player's inventory when broken. After the item became unsplicable, it was changed to never drop anything when broken.