Sandbox

The Sandbox is a vehicle creator in Bad Piggies, where the player can build with every object in the game. To unlock most of the levels, the player must clear ⅓ or ⅔ of an episode's default levels. One episode is unlocked by collecting ten hidden skulls throughout the game.

Each level has twenty star boxes to collect, except the Field of Dreams. However, the main purpose of the Sandbox levels is for the player to control their creation to their heart's content, thus the star boxes won't reappear after they are collected.

The player is given an assortment of parts that varies in each sandbox level. Extra parts can be earned by completing stars in the regular levels. The construction grid is also much larger than those in regular levels.

The Field of Dreams is a level that you have to collect 40 stars. You have all the equipment you need. There are a lot.