Although the "Create" aspect does include minor tweaks to existing levels whilst they are being played, such as placing stickers and decorations in levels, the main focus of this mode is the level editor. The editor incorporates a large number of editing facilities to create levels from a low to a high degree of complexity. The player may create new objects by starting with many basic shapes, such as circles, stars and squares, and "painting" a shape into the level using one of the many materials. Objects may be glued to each other or to the level. More mechanical features are also available, such as connecting objects together with string, using bolts to spin objects, or using various kinds of triggers. Rocket motors can be attached to objects to propel them across a level. After creating custom objects, the player may save their creation to a library for later use, and share their object by placing it inside a prize bubble in their level, so that other players who play the level can collect it and may use it in their own levels.