This is pong playing ai. The cool part about this is it runs in your browser so no need to install any dependencies. It uses tensorflow.js library.
Go here link You have to play 2 games against evil bot. Then AI trains on the data of these two games. Then AI bot will take place of evil bot and you can play against it. Cool this about this implementation is it continues to train everytime it gets defeated. Controls are left and right arrow keys.