As you start playing there doesn't seem to be much of a story. A few philosophical messages left behind by the Sign Painter and a cut-scene here or there. But as you progress through the game you unearth different details about a slightly disturbing world.

A lot of attention has been put into creating interesting levels with great pacing and variety throughout the game.

Physics in-game take into account gravity, wind, weight of different goo-balls, structural integrity of your architectural solutions to create an addictive, "let me try this one more time"-type of gameplay.

World of Goo is pleasing to look at. Most of the time it's very colorful and joyful, but it changes from time to time to reflect different parts of the world. Nevertheless, it is stylistically well presented throughout the game.