"The best selling game of 1994! Doom is the ultimate 3D adventure, brining virtual reality and multi-player action to your PC. Doom includes 9 levels of the most incredible 3D action and superb graphics you will ever experience!
A far-off moonbase sets the stage as you, the only remaining marine, battle demons, mutant humans, and horrors from the bowels of the universe, to save yourself and the world.
Bullet proof armor, night vision goggles and radiation suits are our protection against a monster infested holocaust that's been set upon the universe. You must travel through bubbling lava, rush under crushing ceilings, be lowered into dark passages, and more, to find and destroy the enemy that threatens to destroy you! "
-----Enjoyed the demo? You can purchase the full game updated for modern systems from GOG.com: