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Abyss 048 is a single-player science-fiction horror modification for the critically acclaimed game Half-Life. Jump into a rich and mysterious storyline that spans multiple facilities, cities, and even countries. Lose yourself while exploring the horrors of the universe and the horrors of your mind. Feel the weight of the entire ocean above you as you plunge down to the astonishing depths of the ocean floor. Abandon yourself. Enter the abyss. Prepare to discover what the GoldSrc engine is truly capable of. Prepare to discover what you are truly capable of.