20 games challenge - 1. Pong

This is the first game made for the 20 games challenge that You can find below

https://20_games_challenge.gitlab.io

For first game I chose pong.
I decided to go with physics model and acceleration instead of constant speed.
Game is playable only for 2 players
Arrow keys for player below 
A/D for player above

Have fun and feel free to leave any feedback

PS I realized game lags a bit in browser, I am uploading downloadable version as well :)