I want a primitive tribe simulator.
Survival, events, a council of advisors you appoint and demote, mysterious vision quests, diplomacy trade and raids.
Lots of exploration and discovery, encounter strange creatures.
Adjudicate conflicts within the tribe, often with difficult choices that disappoint a faction within or outside the tribe.
To avoid alienating your own and other tribes, you need to comport your actions with the tribal ethos and culture which is alien to that of modern society.
High level of challenge where "it's fun and interesting to lose"
There is a fantastic game hardly anyone seems to have played called king of dragon pass which formed my definition of the perfect simulator.
To me it is perhaps the best game ever made.
10 years later they came out with a new version but it's only for iphone and ipad.
I'd feel stupid getting one just for this game but it's tempting.
http://a-sharp.com/kodp/ios/