Challenge your brain with this addictive collection of clever spot-the-difference photo puzzles. Each pair of 100 color photos in this book is seemingly identical—but upon closer inspection, you’ll begin to see the differences. The ingenious creator of these puzzles has made 6 to 12 changes in each image—can you find them all? Objects may be missing from or added to a photo; colors may change from one photo to the next: you’ll have to look closely to discover each alteration. With four levels of difficulty, these compelling picture puzzles offer a fun workout for eye and brain. Once you get started, you may not be able to stop!

Steven Rosen is a Brooklyn-based photographer whose work has appeared in numerous publications. Steve is also the author of Spot the Differences.