Simply sharing my current experience in this post as we're more than halfway through. The theme wasn't what I was expecting and my "weirdest" idea is what made it into development (I'm in this solo), which I wonder how many people will get the reference and thoughts behind it.
At first it was slightly stressful to think of an idea and to actually get started, not much though because once an idea started flowing it got more exciting. That said, it's incredibly satisfying seeing the game take shape and nearing completion (minus the final tweaks of course), especially since it will be my first project to make it to completion and not abandoned in the early stages. Personally writing down ideas before working on them and writing a personal dev log on a personal discord server (even though it's currently a dead one) helps me keep on track.
How's everyone else's experience? Is it similarly satisfying or is it more stressful?