Devil skull-shaped arcade machine: Asymmetric bone protrusions + curved hollow gaps for deformed skull silhouette. Screen: shattered triangular 'third eye' niche (forehead); spiral gear-inspired control panel below (buttons hidden between teeth). Marquee: dual twisted horn holographic projectors (nape). Sides: wavy surfaces (melted metal illusion) + rib-like structure with channeled energy lines. Base: segmented spinal column pillar + negative space for infernal seal. Rear: power cables with hanging chains + broken horn vents. Screen periphery: deep eye socket grooves; coin slot as cracked tooth fissure (jawbone). Sharp edges: ritual scar textures. Coating prep: sacrificial marks, lava veins, blood-etched runes.

Devil skull-shaped arcade machine: Asymmetric bone protrusions + curved hollow gaps for deformed skull silhouette. Screen: shattered triangular 'third eye' niche (forehead); spiral gear-inspired control panel below (buttons hidden between teeth). Marquee: dual twisted horn holographic projectors (nape). Sides: wavy surfaces (melted metal illusion) + rib-like structure with channeled energy lines. Base: segmented spinal column pillar + negative space for infernal seal. Rear: power cables with hanging chains + broken horn vents. Screen periphery: deep eye socket grooves; coin slot as cracked tooth fissure (jawbone). Sharp edges: ritual scar textures. Coating prep: sacrificial marks, lava veins, blood-etched runes.

Charred bone (matte cracks + ash) + molten metal (glowing irregular veins). Blood-etched runes (crimson grooves + faint glow). Lava veins (orange-black gradient cracks + heat distortion). Holographic projectors: obsidian cores + neon-etched glyphs. Rib structure: bioluminescent crimson cracks. Spinal base: corroded iron (oxidized patches) + burnt ash. Screen niche: void-black glass (micro-cracks). Infernal seal: tarnished gold foil + blood splatter. Eye sockets: smoked quartz (inner hologrid). Buttons: fossilized resin (tech debris). Chains: weathered bronze (verdigris + blood stains). Coin slot: rust + dried blood fusion. Ritual scars: charcoal grooves + embers. Style: Bio-mechanical occult futurism; matte/gloss contrast