New graphics to bring it up to date and a few new Creeps to keep you on your toes. Find out how the speedy Arrows, damage sucking Decoys and cheating Hoppers will force you to rethink your mazes and your sanity.
The first five Scenarios are tutorials, so if you haven't played before start there. Otherwise you know the drill: Buy Towers, kill Creeps, build bigger Towers. Pwn.