video game series, Amnesia, dark atmosphere, horror theme, eerie environment, abandoned castle, dimly lit corridors, flickering torches, old-fashioned oil lantern, puzzle-solving, stealth mechanics, hide-and-seek gameplay, psychological terror, Lovecraftian elements, detailed stone textures, rusty chains, moldy walls, period clothing, protagonist with no memory, first-person perspective, immersive sound design, heart-pounding chase sequences, interactive objects, survival horror, intense shadow play, ambient occlusion, high-resolution textures, cloth simulation, dynamic lighting, volumetric fog effects, 3D spatial audio.