I like your game idea, and I think your style of organizing your to-do's is pretty nice. I think you might benefit from creating a PERT chart or a roadmap with the pieces you have in there. If this really is your first go at making a game, you'll want to learn early on how to manage tasks in a predetermined fashion. Speaking from experience, it helps keep you on track, even if the next step is doing something you don't really want to do (like drawing tiles, my least favorite part of dev), otherwise you may end up only doing what seems "fun" to you. It'll put you way ahead of anyone else here. ;) https://online.visual-paradigm.com/tutorials/pert-chart-tutorial/