Half-Life, a game which was released in 1998 changed the FPS genre, forever. Black Mesa is modification created by Carlos Montero and his team from Black Mesa Modification Team.The Black Mesa laboratory is waiting for your returnThe history presented in the Black Mesa game is the same as in the Half-Life original title. You are a Gordon Freeman, a young but a very popular scientist who work in the Black Mesa Institute. At early 1998 you, together with the research team from Black Mesa Research Facility you were able to discover the alien word, known as "Xen".Thanks to the teleportation technology you were able to land on Xen and collect Xen inhabitants and wildlife. When you find a mineral known as Xen crystals. Hence, you decided to analyze them in the Anti-Mass Spectrometer. Unfortunately (due to the safety negligence) as soon as crystals are connected with the spectrometer beam, it blows up and then creates various portals, through which aliens from Xen appear on Earth and attack sc