Also known as: バトルムーンウォーズ銀
(Battle Moon Wars Shirogane)
A TYPE-MOON series crossover fan game by maker Werk. It is a strategic RPG in the vein of Super Robot Wars, bringing together the casts and some elements of Tsukihime, Kagetsu Tooya, Melty Blood, Fate/Stay Night, Fate/Zero and Kara No Kyoukai. The protagonists are two original characters, Atsuta Takumi and Mochizuki Haruna.
It contains many parodistic elements, beginning with Kohaku (Tsukihime) becoming Saber (Fate)'s master in a new Grail War and continuing with Arcueid Brunestud becoming the magical girl Phantas-Moon.
The releases are episodic in nature, with each addition not only adding new scenarios and characters but also improving the graphics and gameplay. Four different 'acts' were released annually from 2005 to 2008, coinciding in a final compilation of all four in 2009, The Best, which includes extra content.