Portal trolley in space

1440 × 900

robots in a sci-fi corridor

1920 × 1080

robots in a testing chamber

1920 × 1080

Aperture Science Handheld Portal Device

1200 × 670

The Portal Is Opening

1600 × 1200

Resonance game art

1920 × 1080

Planetside 2 character art

1600 × 1200

Portal turrets in a dark room

1600 × 900

Person Falling into Portal — Blue, Dramatic, Digital Art, Arrow, Silhouette

1680 × 1050

Person Falling into Portal — Gray

1280 × 1024

Portal Gun Device — White, Neutral

1024 × 768

Hands Holding a Cube — Black, Neutral

2400 × 1920