An Interesting Game Concept (I Might Make)

So recently I've had this interesting idea for a game where you live in the bone of a giant. It would be a survival sandbox game and you would have to use rope to move around and secure your buildings and structures. I imagined there being big globs of blood that perspire onto the surface of the bone tissue. The game would start easy, but once the player gets comfortable, the world starts to shake because the giant "woke up" and structures that aren't secured have a chance of falling off. The player would then be able to craft thicker rope to prevent or reduce the chances of structures falling off. I still have the issue of where the player is supposed to get wood from. I might modify the setting to make that make a bit more sense. I think you might be able to get some resources from monsters or something but I'll figure that out sometime later.

I drew some concept art and I think it turned out pretty good. It's got this nicely stylized character with HUGE shoulders and shorter legs for that nice triangular build. Sorry for the low resolution, I'm trying to keep the website at a smaller file size. I don't really know how I would make this game. I was thinking maybe a procedural marching cubes setup, but marching cubes is pretty complicated in my experience because you need the whole lookup table. I might make a page all about marching cubes algorithm later. Right now this is just a rough concept as you can tell, but I think it would be fun to work on it further in the future. If you want you can let me know if you think it's worth the time at mailbox@goblinpizzas.org.