Code City
- Your first program, variables and maths
- If/else decisions and loops
- Functions and lists
- Bug Hunt quizzes and the Code Core boss
Maker Lab turns real skills into a level map. Write JavaScript, make 3D scenes move and program a robot, one short level at a time, with Sprocket the robot coaching you.
34 levels · 3 worlds · no account needed · or play in your browser
Each world is a winding path of levels. Finish one to unlock the next, earn up to three stars, and beat the boss at the end.
Short levels, instant feedback and a coach who reacts to everything you do.
He tells you what to try next, cheers when your code works and helps when there's a bug.
No mistakes earns three stars. XP raises your level as you go.
Wrong answers drain a cell. Cells recharge over time, and finishing a level refills one.
Finish a level each day to keep your streak burning.
Real screens from the app.




Download the installer for your device, then follow the steps.
No install? Play the full game in any modern browser.
Play in browser ▶Yes. Play Maker Lab in your browser. Your progress is saved in that browser.
Yes. There are no ads, accounts or purchases.
Anyone curious about how software, 3D and robots work, from about age 10 up. You don't need any experience.
Coding and Robotics work offline. The 3D Animation world loads its 3D engine online, so it needs a connection.
On your device. Your stars, XP and streak stay on that phone or PC; they don't sync between devices.
Maker Lab's robot mascot and your coach. He has a gear for each ear, a wrench he's always ready to use, and a lot of opinions about your code.