Complete all levels in Chapter 1
Complete all levels in Chapter 2
Complete all levels in Chapter 4
Complete all levels in Chapter 3
Complete all levels in Epilogue
Finish the game
Collect 50 extra goo balls
There is a secret!
Collect 100 extra goo balls
Collect 150 extra goo balls
Build a 5m tower in World of Goo Corporation
Collect 200 extra goo balls
Build a 10m tower in World of Goo Corporation
Build a 15m tower in World of Goo Corporation
Build a 25m tower in World of Goo Corporation
Build a 20m tower in World of Goo Corporation
OCD in all Chapter 1 levels
OCD in all Chapter 2 levels
OCD in all Chapter 4 levels
OCD in all Chapter 3 levels
OCD in all Epilogue levels
OCD in all levels