Explore
More ways to play with code
The trail is only the beginning. These free Koydo activities practice the same three habits — plan, run, debug — right in your browser. No account, no ads, nothing to install.
Keep going
Free coding activities, open right now
Each one opens on a Koydo activity page — ready to play in the browser.
Coding Adventure
Guide a story forward by putting steps in the right order — just like Pip's trail, with new twists.
OpenRobot Path
Plan a robot's route across the grid. One wrong turn is one clue — fix it and run again.
OpenCode Execute
Read a short plan and predict what the computer will do before you press run.
OpenRobot Design
Design your own robot and think through what each part should do, step by step.
OpenRobotics Workshop
Explore how sensors, motors, and instructions work together in a hands-on workshop.
OpenCoding Math Mashup
Mix numbers and logic — solve math puzzles the way a programmer would.
Open
Beyond coding
Hundreds more across every subject
Coding is one corner of Koydo. The activity library holds hundreds of free browser activities — science labs, math games, art studios, and more — and the wider Koydo platform goes deeper on every subject.