Addition Game
Build addition fluency with difficulty levels, score, streaks and missed-question review.
Runs in your browser — nothing is uploadedReady for local practice.
Progress stays on this device.
New-round settings apply when you choose New round. Hidden tabs pause, and direct visits restore paused. Full screen has a visible exit.
How to use Addition Game
- Choose difficulty, question count or endless mode and an optional active-play time limit.
- Type a numeric answer and press Enter, then review the result and continue.
- Review missed facts at the end; direct visits restore the current round paused.
Questions
How does Addition Game work?
Easy addition/subtraction operands run 1–12, medium 1–30 and hard 1–100. Multiplication and division use nonzero facts. Correct answers add ten points and build a streak.
Where is progress stored?
Current rounds and best results stay in this browser when local storage is available. Returning directly to this game restores progress paused. Hidden tabs pause; refresh, closing a tab and exporting do not clear a game save. These games never automatically open from the homepage.
Are answers or typed text uploaded?
No. Gameplay, entered text and answers are local. There is no game account, multiplayer server, external map API or upload; private game contents are not sent to analytics.