Coming hot on the heels of a truly tremendous Xbox Live demo, 2K Boston/2K Australia (formerly Irrational Games) has posted a free PDF file which contains sixty-odd pages of concept art from the game to be printed out at your leisure.  How cool is that?  Word of warning, however: Ken Levine’s forward to the book contains spoilers, so tread carefully.

BioShock is poised to blow minds on Xbox 360 and Windows in just seven days.