This box includes a whole huge castle, loads of siege engines, more terrain, more miniatures, and a whole new way to expand your games called the Siege card game.
The Siege card game simulate weeks of watching and waiting, punctuated by stealthy raids and underhanded tricks. During the game, units on the table will gain ground and move to new positions, get sick and be moved to the out of combat section of the battle board, or even die from the plague. New units may join the besiegers, or sneak through the lines to reinforce the defence. New siege equipment can be built, and can start to batter down the walls. All this quickly replicates the effects of weeks of preparations. After these preparations, you play out the Final Assault.
The Final Assault is played as a normal game of Time of Legends: Joan of Arc. Capturing or holding the many sections of the castle, along with casualties, determine whether attacker or defender can claim victory.