World of Goo 2 builds on its award-winning predecessor, challenging players to build bridges, erect towers, and shape landscapes. The sequel introduces goo, a realistic, flowing, viscous liquid that players can manipulate like a river, turning into goo balls, and using them to solve puzzles. The game also introduces new creature types, each with their own unique properties: jelly, shooting, stretchable, shrinkable, explosive, and more.