Portal Gun Device — White, Neutral

1024 × 768

Cat and Dog in Portals

1920 × 1200

Batman in Dark City — Black, Dramatic, Night, Digital Art

1280 × 720

Cave Johnson Character — White

1600 × 1200

Four People Near Building — Green

1600 × 1200

Two Characters in Combat — Red, Action-packed

1920 × 1080

Four Colored Portals

1440 × 900

Cube with hearts and text

1600 × 1200

White Cube with Heart Symbols — Gray, Neutral

1680 × 1050

Diver in Heavy Suit — Blue, Dramatic, Night, Digital Art, Rain, Light, Water, Black

1920 × 1200

Glowing Text on Dark Background — Black, Night

1920 × 1080

Text Logo on Gray Background

1366 × 768