The Perfect AI Stress Test
So Long Sucker was designed in 1950 by four game theorists including John Nash (of "A Beautiful Mind" fame). The game has one brutal property: betrayal is mathematically required to win.
This makes it ideal for evaluating AI capabilities that standard benchmarks miss:
- Strategic Deception — Can the AI lie convincingly ?
- Trust Modeling — Does it know when to trust and when to betray?
- Multi-agent Negotiation — How does it handle alliances?
- Long-term Planning — Can it set up betrayals turns in advance?
Quick Rules
4 players, each with colored chips. Take turns playing chips on piles. If your chip matches the one below it, you capture the pile. Run out of chips? Beg others for help — or get eliminated. Last player standing wins.
Watch full tutorial (15 min) →