The second book, Freedom(TM), pulls an Empire Strikes Back to supercede the original as the virus attracts more participants to its videogame-like real world culture. The virus incents players in ways I didn't anticipate, and left me wondering what could be incorporated into the real world (and if I would want to). I love books with ideas that demand further discussion and experimentation, and Daniel Suarez delivers.
P.S. I know my reviews are short - I want to convey lingering big-picture impressions, while not spoiling surprises. Feedback is welcome, if you would find something different more helpful.