GlaDOS and the cake

1680 × 1050

Aperture Laboratories scene

1920 × 1080

Portal game loading screen

1280 × 1024

Chell from Portal

944 × 1440

GLaDOS in Aperture Lab

1920 × 1080

Portal game scene with GLaDOS

1920 × 1080

Chell and the Aperture Science portal

1600 × 1000

GLaDOS from Portal

1920 × 1200

Chell and the Aperture Science portal

1680 × 1050

Aperture Science logo with robot

1680 × 1050

Aperture Laboratories cake scene

1280 × 800

GLaDOS with numbers

1600 × 936