What is the minimum ruleset list that would be required in order for a game to be recognised as mathematically viable?

I was thinking the minimum would be at least 7 distinct rules:
1. Playing field construction
2. Win/Loss conditions
3. Player action isolation
4. Mechanic interaction * outcome(s)
5. Categorical distinctions (e.g. class of mechanics or player types)
6. Player and unit state recognition
7. Modifiers and iteration events
8. Conflict resolution agreements
9. Quick cyclical validation for fair play and to minimise player wear and tear.

Of course my game theory is rusty I may as well be fucking my ass with a rusty spoon at this point so I hope y'all got some input/shitposts to share.