Showcasing Four Distinct Spaceships

Design an illustration showcasing four distinct spaceships, each positioned in its own quadrant against a transparent backdrop. The ships should include a streamlined exploration vessel, a robustly-armored warship, a futuristic cargo hauler, and a detailed alien craft. Render these designs with a highly intricate cyberpunk aesthetic, prioritizing luminous neon accents, metallic finishes, futuristic circuitry, and dramatic shadowing to emphasize dimension. Incorporate bold and contrasting colors while maintaining an engaging, immersive theme suitable for an intergalactic adventure game.