Give your brain a little cross-training! Just ten to fifteen minutes a day with the right games can make a big difference (and honestly, it’s fun).

Think of it like working out, but for your mind. With the right mix, you can keep your brain feeling sharp, flexible, and ready for anything. This collection has 399 puzzles, trivia questions, brainteasers, and word games that start easy (“Warm-up”) and ramp all the way up to “Merciless.” They’re enjoyable to play, but they’re also designed to give your brain a legit workout—supporting neurogenesis, a fancy word for growing new brain cells and keeping things fresh.