21 Sum

21 Sum is a fast arithmetic puzzle. A grid of tiles numbered 1 to 9 is dealt. Tap connected tiles that add up to 21, submit, and the tiles vanish while new ones drop in. The clock resets with every correct sum. Miss the clock three times and the game is over. If no 21 is left on the board, it is over too. Bigger sums score more. A group adding up to 42 or 63 is worth far more than two or three separate 21s, so there is always a reason to look for the longer chain. HOW IT PLAYS • Three board sizes: Easy 6×6, Medium 8×8, Hard 10×10 • Static mode keeps a steady clock; Continuous mode speeds up as your score grows • Time setting from 1 to 9: a slower clock costs points, a faster one earns a bonus • Three lives, lost on a timeout • Game over when the clock beats you three times or no 21 remains DAILY CHALLENGE Everyone gets the same board each day. Play it once, post your score and compare with players around the world. Share a link and friends open the same board in their browser. LEADERBOARD AND PROFILE Global and personal boards for every level and mode, today and all-time. Scores are replayed and verified on the server, so the top of the board is earned. Your profile tracks games, points, biggest group, play time and your rank from Beginner to Grandmaster. ACCOUNTS App Store version: Play as a guest right away. Sign in with Apple to keep your name, statistics and scores across devices. Several players can share one phone with separate records. Your account and data can be deleted from inside the app at any time. Google Play version: Play as a guest right away. Sign in with Google or Apple to keep your name, statistics and scores across devices. Several players can share one phone with separate records. Your account and data can be deleted from inside the app at any time. 21 SUM PRO (one-time purchase, no subscription, no ads) • Zen mode: no clock, no lives, just the puzzle • Replay any past daily board • Full game history with filters • Five extra tile themes and fall animations • Background music • A supporter star next to your scores Also playable in the browser at https://speed21-innowheel.web.app

Welcome to 21 Sum! Tap connected tiles that add up to 21 before the clock runs out. • Three board sizes, Static and Continuous modes • Daily challenge: the same board for everyone, every day • Global and personal leaderboards, with every score verified • Play as a guest, or sign in with Google or Apple to keep your scores across devices • 21 Sum Pro: Zen mode, past dailies, history, themes and music (one-time purchase, no ads)