Aqualithia

My game idea and its concept art.
Nyxara is the ruler of the underwater kingdom of Aqualithia. Following an assault by enemy forces, she was forced into exile. Regaining her power required sacrifices and transformation—she underwent a series of complex procedures that fused her body with advanced cybernetics, blending biology with technology.
Abyssium is a prison hidden within an ancient, abandoned temple beneath the ocean depths.