Fate/Extella: The Umbral Star(JPJapanese: フェイト/エクステラ
Meaning: Fate/Extella) is an action game developed by Marvelous based on the Fate franchise. The game crosses over between the major storylines of the series. This release includes all the DLC outfits from the original release plus a new outfit.
The game takes place following the end of Fate/Extra where Nero and her Master have won the Holy Grail War and obtained control over the Moon Cell Automaton computer and gained a Regalia ring, which gives them power over their former enemies' Servants. Suddenly, a new enemy appears with their own Regalia ring.