Most weapons feature an alternate firing mode.Įnemies fall into two categories: aliens and human soldiers. The game's weapon arsenal mostly consists of realistic weapons like pistols, machine guns and explosives, but there are also futuristic energy weapons developed at Black Mesa as well as organic weapons acquired from the invading aliens. The Black Mesa complex in the game is made up of both distinct levels which progress in a linear fashion as well as hubs where backtracking may be required to unlock further areas. If other characters have information to reveal, they address Gordon directly.

Most story elements unfold via scripted sequences, triggered by the player reaching a certain area. The story of Half-Life is told entirely in-game: everything is seen through the eyes of the protagonist. Gordon understands what that means: he will have to fight his way through both aliens and marines to get to the top of the Black Mesa complex and to freedom. Soon afterwards, marines arrive to contain the situation by killing the aliens as well as the surviving human witnesses. Aliens from the dimension Xen suddenly invade the facility, injuring or killing many of the employees. Even stranger things happen when he begins to move the test sample towards the anti-mass spectrometer.Īt that moment, everything goes horribly wrong. Odd things happen as he makes his way to one of the Black Mesa test chambers. However, Gordon comes to realize that it might not be as ordinary as he thought. One morning, as usual, he pits his way to the research facility for a run-of-the-mill experiment. The scientist Gordon Freeman is a Black Mesa employee.

The Black Mesa Research Facility is an ultra-secret laboratory under a government contract to conduct top-secret and extremely volatile experiments.

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