Desert landscape with alien sky

1024 × 768

alien character in a futuristic office

1681 × 1050

Spartan in a dark alien landscape

1920 × 1200

Mass Effect 3 character in a war-torn landscape

1600 × 900

Pixel Art Landscape — Purple

1920 × 1080

UNSC base on alien planet

1280 × 720

Master Chief stands on alien planet

1440 × 900

Solo Soldier in Armor — Black, Dramatic, Sunset

1920 × 1080

Master Chief in a misty landscape

1600 × 1200

Alien Planet Landscape — Blue, Dramatic, Digital Art, Rocky Terrain

1280 × 960

Alien Landscape at Sunrise — Green

1600 × 1200

sci-fi cityscape with alien characters

1680 × 1050