3 new maps have added, one for three difficulty settings. And also added a new tower type, the boomerang tower, as well as some new ?n track?items and a couple of other surprises.
There are 50 brand new levels from Ninja Kiwi himself. There is a new helium bloon type and angled rubber blocks. They make the game a bit more dynamic, and give rise to some really tricky levels with some careful timing as well as aim needed.