Cube with Portals

1920 × 1200

Alien Creature Head — Black, Dark, Menacing, Night

830 × 781

Space Station and Ship — Black

1920 × 1080

Two Robots in a Room

1600 × 900

Portal gun from Aperture Science

1200 × 750

Two Robots in a Lab — White

1920 × 1200

Companion cube with hearts

1680 × 1050

Robots in a Test Chamber

1920 × 1080

Two Robots in Corridor — White, Mechanical

1920 × 1080

White Spherical Robots

1415 × 796

Two Robots Interacting — White

1920 × 1080

Chell with Robots — White

1920 × 1080