This is the second small game done to test my browser game engine after https://news.ycombinator.com/item?id=37434110
and is designed to exercise it a bit more.
The engine had a couple of minor tweaks, and bugfixes, but most of the problems have proven to be CSS related, especially after learning a large portion of the audience are on mobiles with font size scaling for vision reasons, and this would affect the layouts.