Arcade · 3 lives · High score combos · Boss rounds
🎮GAME MODES
💡LEARN & EXPERIMENT
⭐YOUR PROGRESS
🏆RECORDS & PROFILES
🎈
DIVISIBILITY BLAST
Choose how you want to play. You can switch at any time.
You will play as Guest on this device. Scores are saved here and appear on the leaderboard, but
they are not linked to a school account.
Who is playing?
Or create a new player
School learner login
Use the username and password your teacher gave you.
Teacher or adult
Signing in with Google also unlocks your class dashboard.
Works offline — your choice is remembered on this device.
DIVISIBILITY WORLD
How to play
👹
Paused
Rule performance
GAME
OVER
Good effort — every mistake teaches a rule!
Rule performance
RULE BOOK
Tap “Try it” to test the rule in the Divisibility
Lab.
DIVISIBILITY LAB
Type any whole number and see which rules it
follows.
ACHIEVEMENTS
PROGRESS SUMMARY
Rule performance
Danger zone
LEADERBOARD
Your players and everyone else, in one ranking — online or offline.
🔄 Auto-syncing
All players
PLAYERS & ACCOUNTS
Log in with your teacher-created learner account or play locally on this device.
Add a local player
Pick an avatar
Manage the current player
Deleting
removes that player's points, levels, badges and game history from this device. It cannot be undone.
Log In with School Account
Enter the username and password provided by your teacher.
💡 Offline Classroom Support: Once you log in on this device, your account is safely cached so you can keep logging in and playing even when the classroom internet is disconnected!
👩🏫 TEACHER PORTAL
Create learner accounts and track real-time class progress and leaderboards.
🌐 Sign in with Gmail / Google
The quickest way in — use your Google (Gmail) account. No password to remember.
— OR USE EMAIL & PASSWORD —
🔒 Educator Access: Teachers sign in with Google (Gmail) or with email & password. Once signed in, you have access to this dashboard to create learner accounts (username, password, name, surname, grade) and view your class progress & leaderboard in real time.
👩🏫
Teacher
email
➕ Create Learner Account
Class Learners (0)
Your class rankings
Learner Progress Cards
STREAKS & STATS
Recent days
SETTINGS
Language
Sound effects
Reduce motion
Slower balloons
Show rule hints on balloons
Divisibility Blast works completely offline. Nothing is ever sent anywhere unless you choose to connect Firebase Cloud Sync. All local progress remains safely stored in this browser.
☁️ CLOUD & FIREBASE
Sign in with Firebase Auth & sync high scores with Realtime Database without affecting offline PWA play.
Checking status...
AUTHENTICATION
AUTOMATIC SYNC
Cloud Backup & Live Leaderboard
Auto-sync idle
Progress, scores, stars and runs upload on their own — after every round, whenever the network returns, and in the background. The buttons above are only a manual nudge.
🛡️ Offline & PWA Guarantee: Divisibility Blast remains 100% playable offline. When offline, all scores and progress continue saving to this device's IndexedDB and will automatically sync to Firebase Realtime Database once reconnected.
Are you sure?
This
will erase all levels, stars and achievements on this device.