3 new maps, one for three difficulty settings. A new tower type, the boomerang tower, as well as some new â€˜on trackâ€™ items and a couple of other surprises.
Click on the items on the right to buy them and put them in the maze. Towers can only be placed off the paths, but road spikes and monkey glue can only be placed on the paths. As you accumulate money upgrade your existing towers or buy new ones.