Another valuable edition to the WFTW line, this one expands on the "Aging" concepts from WFTW #2.
Some neat monsters here that I'd gladly use for my campaign.
I'd rate it as solid 3.5-4.
Expanded review here: http://afieldguidetodoomsda-y.blogspot.com/2012/08/radioactive-review-wisdom-from.html