Elder Godlike is a good addition to your RPG library, and does a lot of things great, but I was hoping for a little something more...
The game does boast "A complete new rule system for superpowers in Call of Cthulhu." and this section is excellent. Just about any fan of BRP based games could use these rules to run Supers. They offer robust and varied options that should satisfy the character customizers without going into Champions hard-math territory. Savage Worlds players are also given a number of rules tweaks to flavor their super powers rules, though this is much sparser than the BRP rules.
Where I find the book lacking is "A history of Talents in the Secret War". There are indeed 6 pages of background material that blend the Talents history of Godlike into the Mythos history of Achtung Cthulhu, but this book really doesn't mix the two themes together. You are given rules for how superpowers and cthulhian entites interact, but they are never combined together into a whole. There are no Mythos related reason why superpowers exist, or superpowered reasons for Mythos things to exist. They are in the same game-bucket but they are not blended together well.
The scenario given is nicely detailed and apocalyptic, maybe too much so to launch a campaign but certainly capable of ending a campaign f the PCs goof up.
I would definitely recommend this to anyone playing Achtung Cthulhu as a source for new weird powers and such. I would recommend this to any BRP GM as a great superpowers rules kit, independent of the background material. I would hesitate to recommend this to a Savage Worlds GM that was not running Achtung Cthulhu (or a Weird War 2 type game). While the stats and NPCs could be used in other games, there is not quite enough material here for the cost in my opinion.
[4 of 5 Stars!]