The budget meter, also known as the complexity bar is a feature in the Scribblenauts series which limits how many objects the player can summon. The type/size of an object also affects the player. Cars and a variety of vehicles are considered multiobjects (object consisting of many different objects) and takes a lot of limit in the par.

Glitches exist that allow the budget meter to be extended, allowing players to spawn more objects than intended. However, the budget meter primarily exists to prevent the game from being overwhelmed by a large number of objects. Bypassing this limit and spawning too many objects can risk causing a game crash.