Roda Pi turns the lesson on circles and the number π into a simulation players can try for themselves. Players roll wheels of different sizes along a ruler road, measure their circumference and diameter, and discover that circumference divided by diameter is always about 3.14. Twenty levels across five themed tracks then challenge them to work out the number of turns, the wheel diameter, the flag where a wheel will stop, and even two wheels in a row heading for a checkpoint and the finish line. A five-cell battery, stars and a "Did You Know?" card keep it exciting, and the game is easy to re-skin with the mascot, colours and lessons of the ordering school or publisher. Try it right here below, then picture a game like this featuring your brand’s logo, characters and prizes.
Play It Now
Touch/mouse: pick a wheel or flag, drag the slider or tap − and + then ROLL! · Keyboard: ←/→ change value, ↑/↓ switch slider, 1–4 pick, Space rolls, C checks π, H hint, P pause, M sound
Rotate your phone to landscape for the best experience.
Add to Home Screen from your browser menu for quick access.
Game Info
CategorySimulation Game
ThemeScience & Technology
LanguageID · EN
DevicesPhone · Tablet · Laptop
No installPlays right in the browser
Price to playFree to play
Project file priceUS$35
ControlsTouch/mouse: pick a wheel or flag, drag the slider or tap − and + then ROLL! · Keyboard: ←/→ change value, ↑/↓ switch slider, 1–4 pick, Space rolls, C checks π, H hint, P pause, M sound
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Gameplay
20 levels across 5 themed tracks (park, sunset city, cycling track, night highway, star track) with layered backdrops, a ruler painted on the road and changing music
Four measuring levels: roll one turn, note the circumference C in the table, then work out C ÷ d to discover π, with several wheels of different sizes
Graded puzzles: find the number of turns, find the wheel diameter, pick the flag where a wheel will stop, radius and diameter, half and quarter turns, π ≈ 3.14 and 22/7, up to two wheels in a row (every level has a single answer and is proven winnable)
A five-cell battery, stars, a bulb Notebook that shows the working step by step, a "Did You Know?" card after every level and an online leaderboard
Production Quality
Original graphics, characters, music and sound effects created by our team
Plays instantly on phones, tablets and laptops with nothing to install, lightweight and smooth at 60 fps
Touch and keyboard controls, with high scores and progress saved on the device
Available in Indonesian and English
Order One for Your Brand
Swap the wheel pusher, the measuring wheel and the city backdrop for your brand mascot or products, complete with campaign colours and logo
Ideal for schools, tutoring centres, maths publishers and bicycle or tyre makers that want a branded wheel-and-π game
Add online leaderboards, coupons or prizes, QR codes for events and visitor data forms
Fast turnaround from concept to launch, including setup on your website or app
Play Roda Pi Online for Free on Phone and Laptop
Roda Pi is a circle and pi simulation learning game you can play online for free right in your browser, with no download and no app to install. It runs smoothly on Android phones, iPhones, tablets, laptops and PCs, so it is perfect for a quick break at any time. The difficulty rises step by step, welcoming for beginners yet still challenging for experienced players. Roda Pi is developed by PT Cerdas Inovasi Digital, a game development studio in Indonesia, and can be customised for brand promotions, events and education.
Yes. Roda Pi is free to play online in your browser, with no download and no sign-up needed.
Can I play Roda Pi on my phone?
Yes. It runs in the browser on phones, tablets and laptops. On a phone, use the full screen button and rotate to landscape if the game needs more room.
How do I play Roda Pi?
Touch/mouse: pick a wheel or flag, drag the slider or tap − and + then ROLL! · Keyboard: ←/→ change value, ↑/↓ switch slider, 1–4 pick, Space rolls, C checks π, H hint, P pause, M sound
How many levels does Roda Pi have?
Roda Pi is built in progressive steps, with the difficulty rising as you play. Category: Simulation Game.
Can I order a version with my own brand?
Yes. We build custom games with your logo, mascot, prizes and leaderboard for events, booths, campaigns and education. Contact us on WhatsApp for a concept and quote.
How do I buy the project file?
The project file of Roda Pi costs US$35. Use the "Buy project file" section on this page to pay online or order via WhatsApp; bundle discounts apply when you buy several games.
Buy the Roda Pi Project Files
Get the full game to learn from, customise for your brand or publish on your own site.
Complete source code (HTML5 Canvas + JavaScript), no libraries or build step needed
All levels, graphics, music and sound effects included, ready to run in any modern browser
A short guide to changing texts, colours and difficulty and putting the game on your own website
Instant download after payment · secure checkout by PayPal · Buy 3+ games together and save up to 30%
Want a game like this for your brand?
We design and build custom games for event activations, booths, campaigns and education, complete with your logo, mascot, prizes and leaderboards. Besides web (HTML5), we can build it in the format you need: Unity, Unreal Engine, Godot, an Android/iOS app, a desktop (Windows/Mac) game, a touchscreen kiosk, WebGL 3D, or AR/VR. Tell us your idea and we will send a concept and quote.
