Halo game logo and armor

800 × 600

Red Alert 3 aircraft artwork

1600 × 1200

Halo 3 ODST helmet close-up

1600 × 1200

Silhouette of a Soldier — Green

1680 × 1030

Aperture Science logo

3900 × 3600

Portal game cover art

1920 × 1200

Borderlands game logo

1680 × 1050

Soldier in Jungle Armor — Green

1024 × 768

Black Mesa Research Facility logo

1680 × 1050

Aperture Laboratories logo

1600 × 1200

Aperture Laboratories logo with Companion Cube

1680 × 1050

Aperture Laboratories logo

1680 × 1050

Black Mesa logo on dark background

1440 × 900

Half-Life 2 logo on rusted metal

1680 × 1050

Star Wars Jedi Knight III

1024 × 768

Aperture Laboratories logo

1024 × 600

Mega Man X vs Zero

1280 × 900

Aperture Laboratories logo

1280 × 800

Portal puzzle chamber

1337 × 1094

Aperture Laboratories logo

1680 × 1050