Watchable...

But little more. Oh, there is a detail near the end that is intended to lampshade your internal calculations of how many millions, even 10s of millions of dollars involved in the intricate "game"...

But really, as the movie goes along it is so hard to take seriously, that you wind up knowing what the next twist will be, based simply on the obvious fact that there is going to be a twist.

It is slick, well done on just about every level except that the basic concept is ridiculous. It is a film that could be seen as science fiction... But, it plays as fantasy, and I can understand why some people are willing to believe that at some point the protagonist dies and the whole business becomes unreal.