Woohoo for progress! Finished the core game mechanics (thirst, energy, hunger & sanity) today. And here's an explanation for them all:
Hunger: Hunger is pretty self explanatory if I'm honest. Hunger drains over time at the moment but will probably become a bit more complicated eventually.
Thirst: Also like hunger, drains over time but will drain faster after using a lot of energy.
Energy: Used for running and decreases thirst. I do plan to add bonuses that increase regeneration rates and maximum energy.
Sanity: Sanity will drain over time only in dungeons but will regen over time outside dungeons, I also have plans for this to be effected by bonuses too.
Finally, a picture of the way the bars are set out (subject to change):
Oh yeah, I heard Carims working on an amazing world generation system based on humidity, moisture and its infinite ;].