Half-Life

Half-Life is an ego shooter released in 1998. The player takes the role of Dr. Gordon Freeman, a theoretical physicist employed by the Black Mesa Research Facility situated in New Mexico. The game begins with the player taking a train ride into the underground facilities of the Black Mesa complex. Later on, during an experiment a portal to an alien world is opened, which results into a full scale invasion of its inhabitants. In order to survive Gordon fights through the alien infestated underground labs and tries to get to the topside so he can get help by military forces. However, the very same is instructed to cover up the failed experiment and kill any survivors. On the topside Gordon fights through various military facilities adjacent to the research complex and finally gets into an old research lab which teleports him into the alien world Xen, from where Gordon tries to stop the alien invasion.

Singleplayer Maps
Tutorial (Chapter: Hazard Course)

Chapter 1: Black Mesa Inbound
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Chapter 2: Anomalous Materials
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Chapter 3: Unforseen Consequences Chapter 4: Office Complex
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Chapter 5: "We've Got Hostiles"
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Chapter 6: Blast Pit
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Chapter 7: Power Up
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Chapter 8: On A Rail
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Chapter 9: Apprehension
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Chapter 10: Residue Processing
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Chapter 11: Questionable Ethics
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Chapter 12: Surface Tension
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Chapter 13: "Forget About Freeman!"
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Chapter 14: Lambda Core
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Chapter 15: Xen Chapter 16: Gonarch's Lair
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Chapter 17: Interloper
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Chapter 18: Nihilanth Chapter 19: Endgame
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Multiplayer Maps

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 * bounce
 * datacore
 * frenzy
 * gasworks
 * lambda_bunker
 * rapidcore
 * snark_pit
 * stalkyard
 * subtransit
 * undertow