One Small World was designed in response to a brief about encouraging children to learn through play. The game teaches children about the effect that their actions with rubbish and recycling will have on the world. You play as a character who is the caretaker of a small planet. In the game you traverse the world picking up litter and sorting it in a mini game. The points you earn from this allow you to customize your planet, adding more natural features to brighten up the game.