I've been working on this intermittently throughout the weekend, but I'm happy with the simple progress I've made. I've started implementation of procedural cave generation as well as implemented a very basic 2D platformer physics and collision system. I've been using ebiten and golang, and have my own custom boilerplate on top of that to provide game utilities such as collisions, viewports, and entity management. Now it's time to actually turn this into a playable game of some sort!