WeazleWorld was a very ambitious project by a 3-man team during college. The time frame was 6 weeks (during holidays).
The task was to build a game for elementary school children using HTML, CSS and JavaScript in some form.
We used https://threejs.org/ to build a procedural island and populated it with child-friendly minigames.
More here (including more images and videos and a playable version): http://www.mamue.xyz/projects.html