Home is where you can dance like noone is watching

A little DDR game I made in four and a half hours during the jam! Music by FOREVERT from Fugue: https://icons8.com/music/author/forevert Press play and then use 1-4 on the keyboard to play. Refresh the page if you want to play again.
Jam year: 
2019
Diversifiers: 
Scale With A Song
Assetless
Platforms: 
Web standard (HTML5, Java, JavaScript, Flash)
Technology Notes: 
Only tested in google chrome. If music doesn't play, refresh the page, click somewhere on the page, and then press play. That should fix it (I hope...)
Installation Instructions: 

Download zip. Open 'index.html' within the zip folder.

Credits: 

Music by FOREVERT from Fugue: https://icons8.com/music/author/forevert

Source files: