ULTRA0 is an arcade shooter with visual novel elements, where squads of girls wage a final war against giant monsters that have brought humanity to the brink of extinction. As an elite fighter, Shirogane must venture into the most dangerous zones, destroy new kaiju, and uncover the truth behind the appearance of creatures threatening the remains of Country N. One fighter against a whole wave of monsters Combat is built around simple controls and constant movement across the battlefield. Simply point the heroine toward enemies, and attacks are executed automatically. During battle, you can pick up useful items that boost your stats and open up additional options for dealing with large groups of enemies. In critical moments, powerful skills and bombs come to the rescue, capable of clearing the surrounding area in a matter of seconds. Between combat missions, the story switches to narrative scenes revealing a world that has survived a decade of continuous war with kaiju. Through conversations, memories, and new missions, the fate of Shirogane, her fellow soldiers, and the people who continue to defend the last safe territories from the next wave of monsters is gradually revealed. Features of the game Arcade shooter with visual novel elements. Automatic attacks and simple controls. Collecting power-ups during combat missions. The story of humanity's struggle against giant monsters.