Nohra's Concealment will be a Half-Life singleplayer modification. It will feature new characters, a lot of custom content and a deep story.
nohra's concealment sci-fi
Black Mesa Sideline is a small Half-Life singleplayer mission. It contains 2 maps and is fully compatible with HL-Steam and HL-Won.
black mesa sideline sci-fi
Underground is a Half-Life singleplayer mission. It contains 17 maps and is fully compatible with HL-Steam and HL-Won.
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