"We need help, we lost the alpha station and gamma is being consumed by the xenian biomass, send reinforcements... watch out!"

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Prepare yourself, you are part of the resistance response team, you no longer fight on the front lines against the Combine empire, now you delve into the depths of City 15 to help fellow rebels.

Unfortunately for you, you are alone in a hostile and strange environment. Something is altering the xenian fauna and flora, changing it and making it horny.

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I knew you were waiting for me, I hope I don't disappoint you while I think about and prepare the next bot