Half-Life 2 promotional art

1440 × 900

Aperture Laboratories logo with characters

1600 × 940

Aperture Laboratories safety icons

1024 × 768

Aperture Laboratories logo with graffiti

1280 × 1024

Portal 2 game scene

1280 × 1024

Half-Life 2 Episode Two

1440 × 900

Half-Life 2 promotional art

1920 × 1200

Half-Life 2: Combine

1280 × 1024

Halo ring on green hill

1280 × 959

Master Chief with weapon

1536 × 1152

Half-Life 2 characters

1680 × 1050

Portal 2 companion cubes

3200 × 1200

Portal game art with GLaDOS

1920 × 1200

Portal 2 title screen

1920 × 1200

Portal 2 robot companion

1280 × 800

Portal 2 robots holding hands

1920 × 1200

Portal 2 robots holding hands

1920 × 1079

Portal 2 Companion Cube

1440 × 900

Portal 2 puzzle room

1024 × 640

Turret Sentry firing laser

1152 × 864