The game levels was developed on a level editor on the PlayStation Portable , but Zoë Mode was not able to refine the editor in time for shipping . Mottram said " It would be great to see user generated content and this is something we have been seriously thinking about for the future " and that downloadable content " would work perfectly with the Crush level structure and I am sure that fans of the game would be eager to see more levels . " Mottram have stated they would like to market a sequel based on the highly positive feedback they had received ; however , with other Zoë Mode project such as SingStar and Play taking precedence , he do not know when this could be .