N7 Logo on Black Background — Dark

1680 × 1050

Portal Game Icons

1920 × 1200

Portal game ending screen

2464 × 900

Portal game title collage

1024 × 768

White Figure Falling into Portal — Gray

1920 × 1080

White Figure Falling — Gray

1920 × 1080

White Figure Falling

1920 × 1080

White Robot with Blue Lights — Dark, Futuristic

1920 × 1080

Robotic Camera Device — Brown

1240 × 1754

Aperture Logo — Black

3840 × 2160

Portal game art collage

1440 × 1000

Turret Sentry Robot — Black, Dramatic, Digital Art, Laser Beam

1280 × 1024