''Antikristuksen yö'' was a historical game set in war-torn medieval Bohemia. The game was about early nationalism, fundamentalism and religious conflict. One of the key concepts in Antikristuksen yö was a battle scenario that was fought with blunt steel weapons using simple safety rules. The result of the battle was scripted but the fates of individual characters were not. ''Antikristuksen yö'' is part of a longer tradition of historical games created by Finnish organization [[Harmaasudet]].