Related to robot in a testing chamber

Portal title screen

1440 × 900

Portal turret with laser

1440 × 900

Aperture Science welcome screen

1280 × 960

GLaDOS in Aperture Science

1920 × 1080

Aperture Science word cloud

1131 × 707

Aperture Science Enrichment Center

1440 × 900

Aperture Science escape view

1680 × 1050

White Figure Falling — Gray

1920 × 1080

White Figure Falling

1920 × 1080

GLaDOS and Wheatley in Aperture

2560 × 1199

Chell and Wheatley in Aperture

1200 × 756

Aperture Science message

1920 × 1200

Stick Figure Falling — White, Neutral

1920 × 1200

Weighted Companion Cube — Black

1280 × 800

GlaDOS and the cake

1680 × 1050

Now You're Thinking With Portals

1440 × 900

Login screens for Black Mesa and Aperture Science

2880 × 900

Armored Core Last Raven robot

1280 × 1024

Mech in War Zone — Black

1440 × 900

Hands Holding a Cube — Black

1680 × 1050

Still Alive word cloud

1680 × 1050

Chell with a Companion Cube

1920 × 1080

Chell in Aperture Labs

1920 × 1200

Aperture Laboratories cake scene

1280 × 800