I recently saw that there is a farming game out there but is completely conventional farm orientated not so permie. I wish there was a permaculture video game. An experience which focused on being creative and building life not poisons, guns or cars.
Some games currently use building blocks to a great permie game.
-custom terrain creation (Mine craft, though it is to blocky for my liking)
-virtual animals (Buck hunter)
-maturing plant life (Tropico)
-day and night, weather and seasonal changes (Harvest moon)
-home design (The Sims)
-forest management (Stronghold)
any feedback, thanks.