Hard as it may be to remember now, the original BioShock was anything but a surefire hit. The game had a long, difficult development cycle, and during that cycle, studio Irrational
was acquired by publisher 2K, becoming 2K Boston in the process.
Of course, the game went on to be one of the most lauded of the current console generation -- and despite its heavy themes of Objectivism and its unusual setting and art direction, also became quite a commercial hit at the same time.
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Source: Gamasutra