Spark’s daily puzzles all center on a theme (“Ants in Your Pants,” “You’re My Soda Pop”) that’s almost as playful as the games themselves.

What we love: Learning outrageous and obscure facts. (Did you know there’s a language built entirely from the digits of pi?) The four daily games—Links, Chrono, This or That, and Knockout—all build on each other and reveal surprising connections that reinforce your knowledge.

Quick tip: Want to see the topics you’re strongest in? Go to the Profile tab to check your medal count.

Meet the creator: The Mind Company, the developer behind Elevate and Balance, was founded by Jesse Pickard to give the mind the same daily attention as the body. “Every puzzle is crafted by editors who dig into real-world discoveries they can't wait to share,” Pickard says.