Spaceship on Alien Planet — Green, Dramatic, Night

1600 × 1200

Halo 3 Logo and Ships — Blue

1280 × 1024

Blue-skinned Alien Woman — Purple, Dramatic, 3d Render, Armor

2560 × 1440

Futuristic Cityscape — Blue, Serene, Afternoon, Digital Art, Dome Structure

3000 × 1412

Two Figures on Alien Landscape — Brown

1920 × 1200

Alien concept art v4

1500 × 2121

Green Alien Creature — Creepy, Digital Art, Spikes, Claws

1920 × 1080

Alien Ships over Planet — Gray

1920 × 1200

Lava Planet Landscape — Orange, Dramatic, Night, Digital Art, Volcanic Rock

2560 × 1600

Lava Planet Landscape — Orange, Dramatic, Night, Digital Art

1280 × 853

Green Alien Landscape — Dramatic

1273 × 627

The Shield concept art

1280 × 1024