Crystal sphere on a stand

1800 × 1350

Silver Logo on Black — Gray

1920 × 1080

White Robotic Figure

1920 × 1200

Green Alien Creature — Dark

1900 × 1220

Three Alien Figures — Yellow

1600 × 1200

Female Robot Torso

850 × 681

Red Sphere with Ring

1920 × 1080

Aperture Science Logo — Black, Minimalist, 3d Render

1400 × 1050

Aperture Science Logo — Black, Dark, 3d Render

1680 × 1050

Blue and White Sphere — Neutral

1920 × 1080

Portal Gun Device — White, Technological, 3d Render

1200 × 750

Glowing Green Sphere — Mysterious, 3d Render, Green Light

1920 × 1080