Aperture Laboratories logo with Companion Cube

1680 × 1050

Portal Game Logo — Black, Dark, Mysterious

2879 × 899

Portal title screen

1440 × 900

Portal game ending scene

1920 × 1200

Silhouette of Robot and Cake — Blue

1366 × 768

Silhouette of Robot and Cake

1366 × 768

Aperture Laboratories logo on hexagons

1440 × 900

Aperture Laboratories Logo — Black, Dark, Sleek

1920 × 1200

Portal turret with red laser

1920 × 1200

Portal character with portal gun

1920 × 1200

Portal turret with laser

1440 × 900

Chell with portal device

1920 × 1080