Slice of Cake with Cherry — Black, Dark, Minimalist

848 × 651

White Spherical Robot — Curious

1024 × 768

Portal game quotes and icons

1280 × 1024

Person Falling into Portal — Gray

1280 × 1024

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

1680 × 1050

White Robot with Red Light — Gray, Minimalist

1440 × 900

Power Button Icon — Black, Dramatic, Pixel Art

1920 × 1080

Blue Aperture Symbol

2560 × 1600

Aperture Science Test Chamber — Black

1370 × 747

Stick Figures with Text

1280 × 1024

Person Escaping Ninjas — Gray, Humorous

1680 × 1050

Portal Game Icons — Light Blue

1280 × 1024