UNSC Emblem on Dark Background

1024 × 768

Spartan Soldier in Armor — Green, Dramatic, Afternoon

1920 × 1200

Halo Reach Spartan

1680 × 1050

Halo 3 Spartan in combat

1280 × 800

Halo 3 game artwork

1280 × 1024

Aperture Laboratories Logo — Cyan, Technological, Digital Art

1280 × 800

Aperture Laboratories Logo — Cyan

1280 × 1024

Aperture Science logo on dark wall

2560 × 1600

Aperture Science logo

2560 × 1600

Aperture Science logo

2560 × 1600

Aperture Science logo on peeling wall

1920 × 1200

Aperture Science Innovators logo

1024 × 1024