Educational prototype
Rule the World
A Dutch-language platformer that introduces programming by letting you change the game as you play.

Experiment with player variables, CSS, and database queries to make the world playable. Change something, apply it, then try the result in the level. No programming experience is required.
The game asks for a name or email address before play. It stores progress in the browser and records gameplay actions and active level time. If central storage is enabled, it sends registration details and gameplay measurements to that service.