I can't speak highly enough about this product. As a gamer with years of experience I can say this is the full package. Nice game balance, great writing style and tons of originality. As a cognitive scientist, I can tell these folks have done their homework. They broach a number of difficult and intriguing scientific and philosophic issues with a grace and style that makes them approachable without being simple. Add to that the fact that they stand behind their product with an open source license and I was compelled to happily offer them my hard earned cash. Buy it. Read it. Play it!