Kevin Crawford hits it for 6 again. A really interesting take on demigod/immortal game play - the Words system is really flexible and should let your players build any demigod they can conceive. This is Mutants and Masterminds for immortals.
As ever with Kevin Crawford's systems though, the really joy is in the GMs tools, many of which could be easily applied to any system. I love a good random table and if you flick through this book armed with a d6 and a 12 and campaign ideas will launch themselves into your mind.
[5 of 5 Stars!]