They're Not Adding Up!

Your brain thinks it's good at math. It's lying. They're Not Adding Up! is a fast-paced mental math game that starts simple and gets ruthless. You'll see a number. You'll see an equation. You decide: does the equation equal the number shown, or not? Sounds easy. It isn't. The equations get faster. The numbers get sneakier. Your brain starts second-guessing itself. That's exactly when it gets fun. - Clean, distraction-free design - Gets harder the longer you last - Perfect for a two-minute brain warm-up or a 20-minute obsession - No accounts, no sign-in, no nonsense Free to play. Ad-supported. How long can you keep up?