Person in Gas Mask — Blue

1600 × 1200

Gas Mask and Red Flag

1920 × 1080

Soldier in Power Armor — Green

1600 × 900

Half-Life 2 Episode Two

1280 × 960

person in gas mask

1280 × 960

Character Near Wrecked Car

1680 × 1050

Half-Life 2 logo on cracked screen

1680 × 1050

Skeleton with Balloons — Gray, Dramatic

1920 × 1200

Cracked Screen with Logo

1920 × 1080

Silhouette of Masked Figure — Black

1280 × 1024

Person in Gas Mask — Red

1920 × 1200

Person in Gas Mask — Brown, Dramatic, Sunset, Digital Art

1920 × 1080