Petroleum
Negotiation mechanics and AI behavior:
- Both Collude: Oil prices increase by 20% for both companies
- Both Compete: Oil prices decrease by 20% for both companies
- Mixed Strategy: Competitor gets 40% higher prices, colluder gets 30% lower prices
- Price Effects: Applied immediately and last for the entire next turn
- AI Strategy: Standard Oil colludes by default; it will compete next turn if you competed in the previous turn.