Kingdom Under Fire: Heroes is an action strategy game, the prequel to Kingdom Under Fire: The Crusaders, released in 2005 for the Xbox. Both games deal with commanding large armies in epic, magical battles. When the commanding unit enters a battle, the player can control the hero. Each group or army consists of 20 to 30 soldiers, but the player is limited to only five armies and a support unit per game. A support unit, or a special unit, is an army whose main attack does not rely on the race that you control (Humans, Orcs, Dark Elves) but instead on technology for the humans and magical creatures for the Orcs and Dark Elves. Support units are directed and used as powers instead of regular army units and besides the Swamp Mammoth, all support units fly. Besides a new storyline, commanders, and game type, there are also four new units that look like support units, but act as regular ones. The Fire Wraiths, Ice Maidens, Thunder Rhino, and Earth Golem use their respective elements to destroy enemy forces quickly. In Heroes the player has access to seven new heroes, all of whom were in Crusaders: Ellen (half-elf), Leinhart (half-vampire), Urukubarr (ogre), Rupert (human), Cirith (dark-elf), Morene (half-vampire), and Walter (human). Each character has their own campaign which determines the time period of gameplay. When playing as Ellen, Leinhart, or Urukubarr, the game takes place five years before Crusaders. As Morene, Cirith, Rupert, or Walter, the game takes place during Crusaders.