Beyond Citadel is an anime style retro throwback shooter inspired by the classics of the 90's, with realistic gunplay mechanics, anime violence and fast paced combat. Fight your way through the heavily armed mechanical fortress and discover the secret that lies beneath.

The Citadel, the last stronghold of mankind's resistance against the Apocalypse, has fallen. Humankind is now under the control of the Trumpeters of the Apocalypse, the leaders of the forces of the Apocalypse. The “Martyr” who is the last resort of the Seven Angels, the guardians of humankind, is led by a mysterious signal and sets out on a journey to overthrow the Trumpeters of the Apocalypse.

To find the truth behind the signal, buried under the Citadel.