Related to City under Storm Clouds — Green

Half-Life logo with face

1920 × 1080

Half-Life logo on dark background

1920 × 1080

Soldier with Rifle — Orange, Dramatic, Sunset, Digital Art, City

1600 × 1000

Half-Life Logo — Gray, Minimalist

1920 × 1080

Person in Green Hoodie — Dramatic, Intense

2560 × 1600

Soldier with Flamethrower — Brown

1920 × 1200

Soldier in Gas Mask — Gray, Dramatic

1280 × 1024

Portal 2 Title Screen — Blue, Minimalist

1920 × 1200

Lambda Symbol Logo — Gray

1920 × 1080

Orange Lambda Symbol — Minimalist, Vector Art, Black Background

1920 × 1080

Ruined City Street — Black, Apocalyptic

1600 × 900

Spaceforce 2 game artwork

1600 × 1200

girl gaming in spaceship cockpit

1280 × 720

Woman in Cockpit — Blue, Dramatic, Digital Art

1920 × 1080

Tornado over Ruins — Blue

1680 × 1050

The Orange Box Logo — Minimalist

1024 × 768

Man with Glasses — Yellow, Dramatic, Illustration

1920 × 1200

Woman in Black Suit — Green, Serious

3840 × 2160

Lambda Symbol in Octagon

1920 × 1080

Orange Lambda Symbol — Minimalist, Vector Art, Circle

1894 × 1640

Female Character in White Shirt — Dramatic

1920 × 1080

Post-apocalyptic City Ruins — Gray

3200 × 1200

Armored Soldier Head

1024 × 768

Portal Gun from Aperture Science

1920 × 1200