Stronghold Crusader Extreme - PC 30 new stand alone maps that can be played in multiplayer or single player skirmish. Crusader Trail 2 (Warchest Trail) - A 30 mission linked trail showcasing the new AI characters. Crusader Extreme trail - A heavy duty, 20 mission trail that will test the nerves of even the most hardened &#8216;Stronghold Crusader&#8217; expert! Compatible with Microsoft Vista 8 new A.I. opponents: The Wazir, The Marshal, The Emir, The Abbot and The Nizar