Crazy Hard Fast Math Reaction vs The 3D Cube

Crazy Hard Math Challenge - You get it? An infinite number of math calculations await you, 2 buttons, right or wrong, and a very short amount of time. Race the clock to get a high score, take the easy, normal or hard option, it's your choice, but with 3 different leaderboards, why not prove to your friends who is the king of math? It really doesn't get much harder than this! Are you up for the challenge?

Twist, solve, and race the clock. The Cube is a minimalist 3D speedcubing timer built for one thing: getting faster. Drag a face to turn a layer, and the timer starts the instant you make your first move — then stops the moment the cube is solved. No menus in the way, no clutter. Just you and your next personal best. Go beyond the classic 3×3: solve everything from a quick 2×2 up to a brain-bending 7×7, each with scrambles scaled to the cube. Track your progress the way real speedcubers do — best and worst times, averages of 5, 12, and 25, and a full history of every solve. Stuck on a step? Tap HINT for a guided arrow showing your next move — a few are on the house, and you can watch a quick video for a few more whenever you run out. Ads only ever show if you choose to watch one for extra hints — never during your timed solve. Race friends and strangers live: create or join a room, ready up, and solve the same scramble side by side. Sign in with Apple or Google to keep your Cube ID, your records, and your leaderboard standing synced across every device — no password, no friction. Make it yours with five hand-picked color themes or dial in your own with custom hue, saturation, and lightness. Choose your turn feel — Swift, Smooth, or Bounce — and your camera angle, from near-flat to full perspective. Everything works completely offline for solo solving — sign in only if you want races, cloud sync, or leaderboards. Features: - NxN cubes: 2×2, 3×3, 4×4, 5×5, 6×6, 7×7 - Intuitive drag-to-turn controls with three turn-feel styles - Auto-timing: starts on your first move, stops the instant you solve - Speedcubing stats per size: best, worst, ao5 / ao12 / ao25 - Full solve history — see the run that set your record - Guided hints when you're stuck, with free starter tokens - Live online races against friends or matched opponents - Sign in with Apple or Google for cross-device sync and leaderboards - Five color themes plus a custom hue/saturation/lightness editor - Adjustable camera angle (orthographic to perspective) - Fully playable offline, no account required