valve

Portal 2 game cover art

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Steam logo on dark background

1440 × 900

woman leaning on wall with valve

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Woman in a ribbed dress

3222 × 4000

Portal turret with red laser

1280 × 1024

Turret Sentry firing laser

1920 × 1200

Anticitizen One incursion

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Portal 2 logo with portals

1920 × 1200

Portal 2 companion cube

1280 × 800

Portal turret with laser

1440 × 900

Half-Life 2 Episode Two

1306 × 1835

woman in white dress leaning on valve

953 × 1024

Rusty valve on a pipe

1024 × 768

Half-Life 2 logo

1920 × 1200

Half-Life 2: Combine

1280 × 1024

Portal turret with red laser

1920 × 1080

Half-Life 2 logo

1920 × 1080

Half-Life 2 logo on fabric

1024 × 768

Portal game logo and icons

1920 × 1080

BLU Sentry Concept Art

1920 × 1200

Half-Life: City 17 Beckons

1280 × 960

Team Fortress 2 Sandvich

1600 × 900

Heavy from Team Fortress 2

1280 × 1024

Scout from Team Fortress 2

1280 × 1024

close-up of a water valve

1680 × 1050

Team Fortress 2 character lineup

1280 × 1024

Black Mesa logo

1500 × 1300

Half-Life logo wallpaper

1680 × 1050

Valve game series logo

1680 × 1050

Companion Cube with hearts

895 × 600

Half-Life 2 logo

1024 × 768

Half-Life 2 Episode Two artwork

1680 × 1050

Companion Cube with hearts

1920 × 1200

Portal turret sentry

1920 × 1200

Half-Life 2 concept art

1024 × 768

The Engineer from Team Fortress 2

1280 × 1024