English | Japanese “Beyond beyond the rainbow plains, black and white squares, the King of Games. Run, run, the maze of mirrors, farewell, oh pitiable rabbit~~” —Alice and Caster, Fate/Extra The Queen's Glass Game: Perpetual Engine - Maiden Empire (永久機関・少女帝国クイーンズ・グラスゲーム, Eikyūkikan - Shōjo TeikokuKuīnzu Gurasu Gēmu?, localized as Maxwell's Demon - Maiden's Empire: Queen's Glass Game) is an Anti-World Noble Phantasm used by Caster. She assumes the form of her Master's desires, and it can be called the ultimate manifestation of Alice's dream. It winds back the battle to the first turn upon its activation, meaning that the girls’ game will continue on forever if they are not defeated by a set turn.