Portal game loading screen

1600 × 900

Portal game loading screen

1280 × 1024

Chell and the Aperture Science portal

1600 × 1000

Aperture Science entrance portal

1920 × 1080

Aperture Science escape view

1680 × 1050

Aperture Science test chamber

1280 × 1024

Portal test chamber scene

1440 × 900

Portal game loading screen

1920 × 1080

Portal game loading screen

1680 × 1050

Portal game icons and logo

1920 × 1200

Portal game wallpaper

1600 × 1000

Thinking with Portals

1024 × 768

Login screens for Black Mesa and Aperture Science

2880 × 900

The Cake Is A Lie

1440 × 900

The cake is a lie

1280 × 1024

Aperture Science Laboratories logo

1680 × 1050

Aperture Science Laboratories logo

1920 × 1200

Aperture Science Laboratories logo

1024 × 600

Aperture Science logo

3900 × 3600

Aperture Science logo wallpaper

1440 × 900