Dune concept art by H.R. Giger

1280 × 1024

futuristic dome city

2560 × 1920

futuristic cityscape with figures

2110 × 2118

futuristic cityscape under stormy sky

2688 × 1680

Mass Effect 2 concept art

1920 × 1200

mechanical creatures under a comet

1898 × 3750

alien face with tentacles

800 × 600

Alien creature in a corridor

1200 × 829

Alien and dog with ball

1103 × 756

alien creature with energy blast

1024 × 768

Mechanical spider robot in desert

3189 × 1650

mechanical creature in jungle

1920 × 1200