One of the most puzzling moments of BioShock was when our new-to-Rapture hero jams a Plasmid into his arm with little-to-no prompting. Now, had adorable Vampy (Linda Le) been urging him to inject the power goo as she does in the fan-made ad after the break, we might almost have bought it. Almost.
BioShock takes place among the ruins of an underwater utopia. After your plane crashes into icy, uncharted waters, you discover a rusted bathysphere and descend into Rapture, a city hidden beneath the sea. Constructed as an ideal society for a hand-picked group of scientists, artists and industrialists, Rapture collapsed under the weight of its own idealism. Now the city is littered with corpses, wildly powerful guardians roam the corridors, mutated little girls scavenge the dead, and genetically modified citizens ambush you at every turn.