Companion Cube — Blue

1920 × 1200

Robotic Sphere with Blue Light — Dramatic, Night, Digital Art

1600 × 900

Portal 2 Title Screen — Blue, Minimalist

1920 × 1200

Aperture Science Logo — Gold, Industrial

2560 × 1600

Solo Soldier in Helmet — Black

1920 × 1080

Krogan in Helmet

1600 × 900

Woman in Space Suit — Orange

1920 × 1080

Woman Holding Futuristic Gun — Black

1500 × 1875

Companion Cube with Hearts — Purple

1920 × 1200

Companion Cube with Hearts — Black, Romantic

1920 × 1080

White Robot with Red Light — Gray, Calm, Digital Art, Red Heart

1440 × 900

White Cube with Heart Symbols — Black

1440 × 900