Half-Life game title screen

1280 × 1024

Portal Gun Firing

1680 × 1050

Half-Life 2 Episode Two menu

1600 × 1200

Half-Life 2 promotional artwork

1280 × 1024

Half-Life 2 Episode One

1280 × 1024

Half-Life 2 promotional art

8058 × 10000

Half-Life 2 promotional art

1280 × 800

Two Characters in Futuristic Armor — Gray, Dramatic

1600 × 1000

Anticitizen One incursion

1131 × 707

Half-Life 2: Combine

1280 × 1024

Robotic Arm in Lab — Gray

1920 × 1080

Spaceships in Orbit — Blue, Dramatic, Night, Digital Art, Planet, Space Station, Moon

1600 × 1200