City under Storm Clouds — Green

1440 × 900

Robotic Figure in Forest — Blue

1280 × 1024

Man and Woman in Forest — Green, Tense, Dramatic

1280 × 1024

Half-Life 2 Episode Two logo

1280 × 1024

Giant Alien Creature — Yellow, Dramatic, Afternoon

1280 × 1024

Dark Industrial Corridor — Gray

1680 × 1050

Concrete Tunnel Interior — Gray, Dark, Ominous

1680 × 1050

Half-Life 2 Logo — Silver, Neutral

1280 × 960

Half-Life 2 Logo — Silver

1280 × 960

Half-Life 2 Logo — Gold

1280 × 960

Woman and Robot in Doorway

1680 × 1050

Half-Life 2 logo

1024 × 768