This is simply a book of anagram puzzles. Some of them are really easy, but most are challenging and some are very hard.
I love anagrams, so this was an easy purchase for me, especially at 99 cents. Each anagram has a clue and some of them seem worthless at first until you solve a few puzzles and realize that the clue itself is sometimes a bit of a puzzle to figure out which part of it is the hint. After I got used to that I found it quite fun as it becomes sort of two puzzles at once.
There are tons of anagrams. I've played for several hours and have only worked my way through about 1/3 of them.
I think after I finish them all I can probably let it sit for a month or two and play them again without remembering the answers since there are so many of them.
I was indecisive about whether to rate this 4 or 5 stars, but since it's such a great value I went with 5.