Related to Portal turrets in a dark room

Person Escaping Ninjas

1680 × 1050

Four People Near Building — Green

1600 × 1200

GLaDOS in a chamber

1920 × 1080

two robots in a tunnel

1280 × 1024

Two Robotic Spheres in Space

1920 × 1200

Spherical Robot with Blue Light — Black

1600 × 900

P-Body Robot

1280 × 1024

Turret Sentry Robot — Black

1024 × 768

Companion cubes with hearts

1280 × 1024

Robotic Head with Light

1920 × 1080

White Cube with Glowing Center

1680 × 1050

Dead Dreamer: Decay of Destiny

1024 × 768

Portal characters in test chamber

1920 × 1080

Aperture Science Logo — Black, Dark, Digital Art

2560 × 1600

Robotic Turrets in Lab

1920 × 1080

Aperture Science Logo — Black, Dark, Digital Art, Text

2560 × 1600

Aperture Laboratories Logo — Black, Dark, Industrial

1440 × 900

Portal Logo — Blue, Dark

1920 × 1440

Aperture Logo on Wall — Black, Dark

2560 × 1600

Aperture Laboratories Logo — Black, Dramatic, Digital Art, Wall

2560 × 1600

Aperture Science Logo — Green

1280 × 704

Audi Logo on Grid

1131 × 707

Four Turrets in Corridor

1600 × 900

Robotic Turrets

1680 × 1050