29. World of Goo
System: Wii, PC, mobile
World of Goo tasks you with getting a collection of goo balls into a pipe at the end of each level by using them to form bonds with each other, creating structures used to traverse any given levels terrain while avoid obstacles. There are several different kinds of goos, like bone goo (invulnerable to some environmental dangers), pokey goo (creates spikes that ground it in a level or object) and balloon goo (used to fly upwards). There are a lot of different types of combinations youâ€™ll need to survive all the challenges, but, surprising no one, you should play this one just for the visuals and animation.