Atom Symbol on Wall — Gray

2560 × 1600

Aperture Science logo on concrete

2560 × 1600

Aperture Laboratories Logo — Blue, Dystopian

1024 × 768

Aperture Laboratories Logo — Black, Dark, Industrial

1440 × 900

Aperture Laboratories Logo — Gray, Dramatic, 3d Render

1920 × 1080

Atom Symbol on Wall — Black

2560 × 1600

Metro 2033 logo

1600 × 1200

Half-Life 2 Logo on Concrete — Gray

1280 × 1024

Metro: Last Light logo

1600 × 973

Aperture Laboratories Logo — Gray, Dramatic, Digital Art, Concrete Wall

2560 × 1600

Aperture Laboratories Logo — Black, Dark, Digital Art, Text, Concrete Wall, Gray

1600 × 1200

Aperture Laboratories Logo — Black, Dark, Digital Art, Text, Concrete Wall

1280 × 1024