1. I am Awesome: http://iamawesome.com
Now go get 'em, tiger.
2. Grammar Games: http://chompchomp.com/exercises.htm
This website is full of exercises that teach you about commas, apostrophes and all of that good stuff.
3. Sven the Bouncer: https://berghaintrainer.com
You must answer three questions correctly so that Sven lets you in. (Chrome required).
4. 14 Highest Mountains: https://www.martin-laxenaire.fr/experiments/8000ers/
We are given the 14 highest mountains, with trivia and the most common routes to climb them.
5. Klocki: https://www.kongregate.com/games/targaciej/klocki
A puzzle game where you try to connect lines by swapping the squares.
6. Satellite's Orbiting Earth: https://qz.com/296941/interactive-graphic-every-active-satellite-orbiting-earth/
Interactive graphic of every active satellite orbiting earth.
7. Browser Ball: http://weareinstrument.com/ball/#
You can throw this ball across every window you create.
8. Water Simulation: http://madebyevan.com/webgl-water/
Water simulation that lets you change some settings and manipulate the ball, you need a good graphic card.
9. Path Tracing: http://madebyevan.com/webgl-path-tracing/
Another simulation by the same creator, in which you can control the light source, the material of the objects and the objects in the room.
10. Jellyfish Particles: https://jayweeks.com/medusae/
Just a Jellyfish simulation...