Related to Portal-themed birthday celebration

Four People Near Building — Green

1600 × 1200

Mario Luigi and Peach

1280 × 1024

Sonic Characters at Party

800 × 600

Portal: Love vs Lies

1920 × 1200

Portal cake and cube

2560 × 1024

GLaDOS with cake

800 × 750

Video game characters at a festival

1600 × 901

Woman with Portal Gun

1920 × 1080

Portal gun with fiery portal

1280 × 1024

Aperture Laboratories Logo — Cyan, Futuristic, Digital Art, Text, Black

1440 × 900

Aperture Logo on Wall — Black

2560 × 1600

Aperture Science Facility

1920 × 1080

Portal Device in Test Chamber

1920 × 1080

Aperture Laboratories Logo — Black, Dramatic, Digital Art, Text, Blue

1280 × 1024

Aperture Laboratories Logo — Black, Dramatic, Digital Art, Text, White

1920 × 1020

Companion Cube — Green

1920 × 1200

White Cube with Heart Symbols — Gray, Dramatic

1920 × 1080

Blue Aperture Symbol

2560 × 1600

Blue Screen Error — Dramatic, Digital Art

1600 × 1200

Aperture Laboratories Logo — Black, Dark, Digital Art, Text, Green

1440 × 900

Companion Cube with Heart — Pink, Playful, Illustration

1366 × 768

Cube with Heart Symbols — Beige, Neutral

1280 × 1024

Cube with Heart Symbols — Beige

1281 × 1024

Aperture Science Test Chamber — Black

1370 × 747