Portal gun from Aperture Science

1200 × 750

graffiti-covered wall in game

1920 × 1200

Companion Cube with hearts

1700 × 1200

Thinking with Portals

1600 × 1200

Portal 2 game artwork

1680 × 1050

Aperture Science logo

1440 × 900

Aperture sign with orange suit

1280 × 1024

Aperture Science logo

1683 × 1050

Half-Life 2 concept art

1280 × 960

Aperture Science wall graffiti

1200 × 900

Team Fortress 2 workshop scene

1366 × 768

Global Agenda game characters

1600 × 1200

The Rookie scene from game

1440 × 900

Dark Star One character portrait

1280 × 1024

Star Wars The Old Republic

1920 × 1200

Portal game cover art

1280 × 1024

Portal game icons and logo

1920 × 1200

Portal game safety icons

1920 × 1200

Mass Effect 2 concept art

1224 × 720

Mass Effect 2 concept art

1280 × 1024