Here is the future:
I'll make any object with a limit of 8 polygons.
I think it's time to make my direction with this thing more public.
This game will be all about survival and progress.
Advancing your capabilities and gaining new abilities for you den.
There will be tons of natural NPCs, but more importantly you will have your own.
The other NPCs you control will not be the same as you, but they will be a combination of other creatures,
each having its own specializations and uses.
You will be able to train them to do your bidding, and to follow you around.
Sort of like Pikmin I guess.
The example I keep giving lately:
You have a digger creature, which on its own will pretty much dig it's own habitat separate from your den.
But if you tamed it, you could have it stay around your den, and use its help when you needed it.
You could lift it up, like any other game object, and carry it around, mining out the ceiling.
The digger would be a better miner than you (somewhat faster method of digging) and you could further benefit from it by teaching it how to dig straight tunnels and stuff.
At furniture:
I don't think there will be that many uses for it.
I'm not sure we're dealing with human PCs/NPCs here.
I would like a sort of "rest" structure, which would refill one of the vital stats.
Also a control station, which would be semi-difficult to put up, but would offer you direct control over
your individual minions, instead of having to use them as tools.
That would allow you to use the full capabilities of the digger, since you wouldn't have to carry him around like a crazy person, and he wouldn't randomly start tearing up your tunnels.
Other creature ideas and abilities:
-Spike thing : Scuttles around at the bottom of pits and crevices.
If you can get to one successfully unkilled, they are the best projectile in the game.
But unless you tame them, they will just scuttle back off after being thrown.
-Shield thing: Big round protective creature, uber unkillable from only one side.
You could train it to sleep in the entrance of your den, like a big door, and wake it when you want to go outside.
-Meat thing: Just your average cattle. You can use them if you want,
they would make good expendable recon if you had a control station. They are mostly for herding and eating.
There are probably going to be a dozen different ones.
Most will be naturally occuring, in their own caves, but some will need to be created.
Creation will occur when a set of specific materials are added together in the right sequence.
That is what I have so far, it's a ways off, but I want to see it through.
The AI will also be super simple, with the primarily useful tendencies used for enemy NPCs,
giving the killing advantage.
You will have to do a lot to get your minions into a useful state, and you will probably have to stockpile food
deep in your cave to keep them from wandering away at first.
Once they are familiar, you can start training them, and using them for stuff.
Any additional ideas?
This is all pretty far off right now, but the general flow will be in this direction.