Related to Cave Johnson's lemon rant

Stick Figure in Water

1024 × 640

Woman with Portal Gun

1920 × 1080

Character Holding Device — Gray

1920 × 1080

Ninjas and portals

1366 × 768

Blue Screen Error — Dramatic, Digital Art

1600 × 1200

Ninjas vs Companion Cube

1280 × 1024

White Figure Falling into Portal — Gray, Surreal

1680 × 1050

Portal gun with fiery portal

1280 × 1024

Person Entering Portal

1500 × 1000

Silhouette of Robot — Black, Dramatic

1920 × 1200

Weighted Companion Cube — Black

1280 × 800

Circular Interface with Text

1680 × 1050

Portal Game Icons

1920 × 1200

Cube with Heart Symbols — Beige

1281 × 1024

Hands Holding a Cube — Black, Neutral

2400 × 1920

Portal Game Map

1440 × 1000

White Spherical Robot — Black, Minimalist

1920 × 1080

Text on a Screen — Black, Mysterious

1680 × 1050

Portal Game Logo — Black, Dark

3840 × 2160

White Spherical Robot — Green

1920 × 1200

White Robot with Red Light — Gray

1280 × 800

Slice of Cake Illustration

1920 × 1080

White Robot with Red Light

1366 × 768

White Robots in a Row

1920 × 1080