Retro_alien_attack.gif: Ultra-pixelated 64x64, alien xenomorph, menacing sprite, extremely low resolution, blocky design, acid dripping from jaws, severely limited color palette, dark greens, metallic grays, eerie blacks, pixelated landscape, desolate planet surface, jagged rocks, ominous shadows, spaceship wreckage in background, Atari-era graphics, side-scrolling perspective, chiptune soundtrack, glowing red eyes piercing through dark, pixilated steam rising from vents, menacing presence, impending doom, retro gaming aesthetic, 2D side-scroller, iconic alien creature in pixelated form, blocky details adding charm, simple yet effective design, ominous, threatening, alien attack, pixelated explosion effect illuminating scene, retro-futuristic environment, vintage computer game style, game over screen | Pixelart