There have been quite a few different tower defense games to come and go. Defenders of Ardania thinks they have a new spin that will freshen up the genre. Defenders lets you play defense and go on the offensive at the same time, with two dozen upgradeable tower types and an equal number of offensive units to anihiliate your friends.
Although DoA includes a single-player portion, the focus of the game is undoubtedly multiplayer, where two to four players can take each other on or compete against AI opponents via Internet, LAN, or PSN. The multiplayer component offers three different game modes where players can assume either the defensive or offensive sides –or both!