Are Humble Bundle RPG GM Books Worth It?

I own the Instant Towns & Cities book, and honestly, it was a letdown for me. Most of the entries have very brief descriptions—like around 300 words—and they don’t provide much depth. For example, one town is just described as a bread village with bakers. It lacks illustrations, maps, and feels like it was thrown together quickly by various writers. I don’t plan on buying more from this series unless I hear better things about them later.

I think the Proactive Roleplaying book is solid for any RPG system. The others in the bundle are more focused on D&D, but the entire package is a great deal for the price!

Books on NPCs and traps are actually a lot of fun to read. Even if I don’t use them directly in my games, they give me interesting ideas. I also have the Traps and Random Encounters books—those are decent but not mind-blowing.