Increment is a fast, arcade-style mental-math game that turns simple arithmetic into a reflex sport.
The rule is dead simple: you're shown a number and an instruction: "add 1 to each digit." Type the transformed number on the keypad before the timer runs out. So 125 becomes 236. Easy? Now do it in a second and a half. Now the digits roll over, so 9 becomes 0, and 909 becomes 010. Now it's +2, then +3. Now there are more digits, up to four.
TWO WAYS TO PLAY
• VS: challenge a friend on the same 10 numbers. Send a link; they play the same round with your time ticking on each number; the faster answer takes each point. You get a notification when they've played. Works between Android and iPhone.
• Classic: endless escalation. Build streaks, level up, survive three misses.
Plus a Daily Challenge: the same 20 numbers for everyone, every day. Keep your day streak alive and share your grid.
Make it yours: pick an avatar and your country flag. They travel with every challenge you send, and your stats live on your profile.
Nail answers in a row to build streaks and level up: bigger numbers, bigger increments, less time on the clock. Miss three and the run is over. Then you do the only reasonable thing: play again.
FEATURES
• Two modes, VS and Classic, plus a Daily Challenge
• Challenge friends with a link: no accounts, no sign-up
• VS results arrive on their own, with a notification when your friend has played
• A player profile: avatar, country flag and your stats
• One-more-go arcade loop: quick runs, instant restarts
• Escalating difficulty: up to four digits, bigger increments, a tighter timer
• Digit roll-over (9 → 0)
• Tracks your best score and best streak
• Clean, high-contrast design built for one-handed play
• Optional one-time "Remove Ads" upgrade
No accounts. No fluff. Just you, the numbers, and the clock.
Fast mental-math arcade: add to each digit before the clock runs out.