Siege of Eratosthenes

I made a small 2D mario-type side scroller that runs in the browser. Arrow keys to move / jump.You can see / download code here: https://github.com/grokit/grokit.github.io/tree/master/siege Its fully open-source, so feel free to fork it in your own thing. I got some of the graphical assets on https://opengameart.org/. You can create your own levels by modifying the files in levels using tiled (https://www.mapeditor.org/). I built it to be super simple to modify. Its ~1000 LOC including comments....