The game is set in the fantasy world of Majesty, but with a twist. Besides the core mechanics of placing towers to stop advancing enemy units, Defenders of Ardania also allows players to take on the role of the attackers seeking to conquer the enemy base. Players must oversee unit production and upgrades while assembling the most effective army from one of three playable races, each with unique locations, towers, and units. A wide range of spells will be available for players to decimate their enemies and protect their forces. 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.