TechEverything

CodinGame

CodinGame offers up fun free games to help learn more than 25 programming languages, including JavaScript, Ruby, and PHP. One of the great things about CodinGame is that you can play with friends or colleagues, and also enter international coding competitions.

Code Combat

CodeCombat is aimed at teachers and students, but anyone can play., you’ll move your Hero through the game using some basic commands according to the tutorial alongside the game.

Untrusted

Untrusted is a meta-JavaScript adventure game that tests your JavaScript skills to solve problems. You use JavaScript to guide Dr. Eval through a machine continuum and alter his reality to move between levels. It’s a free fun game.

CheckIO

CheckIO is both strategy games that can teach you JavaScript . CheckIO lets you improve your skills by using others’ solutions.

Elevator Saga

Elevator Saga tests your JavaScript knowledge with challenges related to moving an elevator and transporting people in the most efficient manner possible.

Screeps

Learn to code JavaScript by playing game. This game claims to be the world’s first MMO strategy sandbox game for programmers.