Very well written book covers Cosmic level heroes for M&M. It provides plenty of advice on various kind of cosmic-level games, and provides a few power suites for cosmic characters to use.
My only complaint was that the book didn't cover was large scale combat for cosmic characters. These types of beings can take on fleets of starships, yet there was no info/advice on doing so. Other than that, this is definitely a good book for higher powered games.