Rules & Fair Play

SifirPro: Multiplication Arcade is a free times-tables game for children and families. These are the simple rules that keep it fun and fair.

Game modes

• ⚡ Quick Play
  Answer as many multiplication questions as you can in 60 seconds.
• ⏱️ Time Attack
  Start with 30 seconds. Each correct answer adds 2 seconds — how long can you last?
• ❤️ Survival
  No timer, but three mistakes and the run is over. Accuracy is everything.
• 🗓️ Daily Challenge
  One shared question set each day. Your best score of the day goes on the board.

How scoring works

• Every correct answer earns points.
• Answering faster earns a speed bonus.
• High accuracy earns an accuracy bonus, so guessing wildly hurts your score.
• Scores are calculated on our server from your answers and the time your run took, not by the app on your device.
• Runs that look impossible for a human (for example far too many answers per second) are not accepted onto the leaderboards.

Difficulty

The game covers times tables 1 to 12. Your age group sets the starting range, and the tables get wider as you answer more questions correctly in a run.

Leaderboards

• Boards are available for today, this week, this month and all time.
• You can view the world board or filter by country and by mode.
• Each player appears once, showing their best score in that window.
• The Daily Challenge uses the same question set for everyone on a given UTC date, and keeps only your best score for that day.

Nicknames

• Never use your real full name — pick a made-up nickname.
• Do not include a school name, address, phone number or email in your nickname.
• Keep nicknames friendly. Offensive nicknames may be removed.
• Nicknames are not reserved, so more than one player may choose the same one.

No money, no prizes

SifirPro is free. There are no advertisements, no in-app purchases, no subscriptions, no cash prizes and no gambling-style mechanics of any kind. Leaderboard places are for fun and practice only.