PICO-8 was recently updated and that inspired me to get back into it. I wanted to port my favorite 2D graphics, the fire effect from the title screen of the PSX version of DOOM. Of course, I need to mention the very help guide to this effect written by Fabien Sanglard. You can checked out the HTML export of this PICO-8 port here.
It had been a year since I had written any Lua and the process of porting this effect from my C implementation was a little tricky. Many early iterations of this performed quite terribly. The limitations of PICO-8 requirement me to change the height of the effect as well as the color depth. That being said, I am happy with how it turned out.