Zara Survival Engine

Zara will be useful for you if you want your game to have weather-aware health control with ton of intertwined parameters, sleeping, fatigue, diseases (flu, food poisoning, venom poisoning, angina and so on), injuries (cuts, fractures), food spoiling, water disinfecting, inventory, crafting, clothes with different water/cold resistance levels and more. On a surface, it is really easy to set up and use.
Zara is a complete package with full implementation of the inventory system with crafting.
Instant save and load of the entire engine state is fully supported.
Everything, including built-in inventory, will be saved and loaded on your demand, you don't have to worry about this low-level stuff, and you can dedicate more time to the actual game making.
Zara includes:
Health Engine that controls dozen of parameters
Disease Engine with treatment
Disease Monitors
Medical Agents
Injury Engine with treatment
Pills and injections
Bandages, splints, etc.
Inventory Engine with crafting
Clothes and Clothes Groups
Built-in Sleeping mechanics
and more.
Visit Zara Github for more info.