Volume 3 of the dark wallpaper pack. Twenty new 4K wallpapers in four fresh themes: bioluminescent caves, deep space nebulae, brutalist monochrome architecture, and retro CRT scanlines. What's inside: glowing cave fungi and teal mushrooms on wet rock, still underground lakes, faint magenta and indigo nebulae over black starfields, dark dust lanes, a distant spiral galaxy, raw concrete monoliths and brutalist stairwells under flat gray light, phosphor green and amber CRT scanline textures, and moody terminal glow. 20 PNG files at 3840x2160. Every frame keeps the center quiet, so desktop icons and text stay readable. All 20 checked for brightness: dark overall, glow at the edges. Resolution: generated at 1920x1080, upscaled to 3840x2160. Dark, low-detail art hides upscale softness, so these hold up on 4K screens. For 16:10 or 4:3 monitors, crop instead of stretch. Pairs with Vol.1 and Vol.2 if you want the full set of 60. License: personal use on your own devices, plus commercial use inside your own work (video backgrounds, stream overlays, client projects). Don't resell or redistribute the pack as-is. Instant download after checkout.