glowing cube with heart symbols

1920 × 1080

Glowing Helmet Mask

1920 × 1080

White Cube with Heart Symbols — Dark, Mysterious

1290 × 1050

White Robot with Red Light — Gray, Calm, Digital Art, Red Heart

1440 × 900

StarCraft II Logo — Blue, Dramatic, Digital Art

1280 × 1024

Companion Cube with Hearts — Black

1440 × 900

Aperture Science Logo — Brown, Neutral

1024 × 1024

Aperture Science Logo — Gray, Neutral

1900 × 1200

Portal companion cube sketch

1920 × 1200

White Spherical Robot — Curious

1024 × 768

Companion cube in a test chamber

1680 × 1050

Portal game cover art

1280 × 1024