Half-Life 1.1

Fights and shoots all kinds of monstrous creatures both frightening and terror inflicting. A first-person shooter game with an intriguing narrative story, help friends, do your mission and survive the wave of aliens hunting you, and the aliens are not your only enemies, humans as well.

Valve's debut game, Half-Life, was a huge public success and a major influence for the first-person shooter games, even many years after it was released. Launched in November 1998, it sold over 20 million units in the next 6 years, and is considered a classic of the genre. It also was one of the first games that introduced scripted scenes and removed the loading screens (admittedly, with some tricks), an important technology advancement for that time.

The story evolves around Gordon Freeman, a theoretical physicist working in new Mexico at Black Mesa Research Facility, a scientific lab similar to the famous Area 51. The game starts with one of his experiments ending in disaster, blowing up the facility and opening an inter-dimensional rift. The rift allowed hostile aliens from a civilization named Xen to enter the facility and start killing people. Gordon had to fight aliens and the Special US Military Forces dispatched a facility to eliminate both aliens and facility personnel. Freeman manages to convince the lab personnel to help him against the aliens, and is teleported to Xen world to kill Nihilanth, the creature that maintained the rift open. More