A tiny ray casting demo which I converted from a QBasic code:

{"name":"4186_large.png","src":"\/\/djungxnpq2nug.cloudfront.net\/image\/cache\/5\/3\/537959c5435626729c6ebb830bd5f940.png","w":320,"h":200,"tn":"\/\/djungxnpq2nug.cloudfront.net\/image\/cache\/5\/3\/537959c5435626729c6ebb830bd5f940"}

Arrow keys to explore, Esc to escape.

You could maybe try making a Wolfenstein clone.

No! It's time to create