5 out of 5 rating for 13th Age Bestiary
As the authors state, designing monsters in 13th Age is easy, so to make this book worth picking up, they had to go beyond what most GMs would be able to pull off within a week (in addition to their other RL obligations). This book accomplishes that very well! Each entry is basically an advertisement begging you to put them in your campaign. (When the book first came out in PDF form, I MAY have had an encounter with a basilisk, a couple of rust monster, and chuuls because I wasn't able to control myself.) The monsters aren't always what is traditional. Any GM can open up their other RPG tomes to get something traditional. 13th Age comes up with quirky new ideas or alternative takes to these monsters that you have the option of using instead (or throwing away in favor of traditional). Though there are only 52 entries, each monster is given around 3-5 pages. These pages have a couple of stat blocks, but also have sections about building battles, the relationship between these monsters and some of the icons, names, adventure hooks, random loot that monster may be carrying.