Trailers for "Sticker Star" were shown at E3 2010, E3 2011, and Nintendo World 2011, but its title was not announced until E3 2012, and the game was released later in the year. As Miyamoto was no longer the series producer, he asked the developers to not create any new characters and instead use established pre-existing ones in the "Mario" franchise; Nintendo's intellectual property team enforced this statement into future games in the series. He also asked to change the combat system from "The Thousand-Year Door", and to remove most of the story elements due to early feedback from fans.