I purchased this PDF as my husband and I are hosting a homebrew game that has incorporated the mythic rules since beta testing. With the published rules for Mythic Adventures out, we looked forward to more mythic monsters, but were somewhat saddened by the limited selection available in the official book.
Mythic Monsters: Demons was a terrific find. All of the most iconic demons (and a certain extradimensional undead with demonic connections) have been updated to mythic versions. Each statblock presented has new mythic abilities customized to the creature's theme; some enhance the demon's existing abilities, others grant completely new abilities. All are suitably mythic and certain to provide new challenges to players... especially those who have the statblocks of iconic creatures memorized. The mythic quasit's mythic master power is dangerously tempting, while the demonic glory power grants a mythic succubus the ability to cow and mesmerize all who stand before her.
This PDF contains only two pieces of art, but each are of high quality. The real meat of this publication, however, are the mythic powers and complete statblocks. The lack of individual artworks for demons that already have countless visual depictions does not detract from the quality of the crunch - and quality crunch is, essentially, what the Mythic Monsters series is out to provide. Like most mythic creatures, it is up to the GM to determine how, where, and why such beings exist in their campaign setting.
Like many other reviewers, I was overjoyed when the APG was finally released! The class options are varied and interesting... of course, the Inquisitor has been my personal 'favored class' since the beta testing first came out. It was also good to see new combat maneuvers, and some new spells which go a long way to proving that 'fireball' is not the be all and end all of arcane spellcasting.
The lack of editing throughout the book was noticeable and disappointing. Hopefully this will be fixed in later printings. That said, the APG is a very solid addition to the Pathfinder series with a great range of options to prevent your players from ever quite knowing what to expect...
Some particularly inspired and useful ideas that players (and NPCs) can benefit from very early on; the range of low cost rings presented here offers great new variety for both low level and low magic campaigns.