Companion Cube — Blue

1920 × 1200

Soldier in Helmet — Green, Dramatic, Digital Art

1280 × 1024

Solo Soldier in Armor — Gray, Dramatic, Digital Art, Explosion

1600 × 1200

Solo Soldier in Armor — Gray, Dramatic, Digital Art, Rain

1680 × 1050

Companion Cube with Hearts — Blue, Melancholic, Digital Art

1920 × 1200

Portal 2 Title Screen — Blue, Minimalist

1920 × 1200

Soldier in Blue Armor — Dramatic, Night, Digital Art

1024 × 768

Spartan sniper on a coastal path

1920 × 1080

Spartan Soldier in Armor — Green, Dramatic, Digital Art, Gun, Helmet

1600 × 1280

Squad of Armored Soldiers — Black, Dramatic, Digital Art, Weapons, Space Background

1920 × 1080

Squad of Soldiers in Armor — Gray, Dramatic, Digital Art

1680 × 1050

Spartan with sword on alien planet

1536 × 1152