Round: 0
Attendance σ²: -
Efficiency: -
Minority side: -
About: In the Minority Game (Challet & Zhang 1997), an odd number of agents independently choose 0 or 1 each round; those in the minority win. Agents have strategies mapping recent history to actions and update strategy scores. The system exhibits a phase transition in α = 2m/N: below α_c agents use information efficiently (low variance), above it behavior is random-like. The grand-canonical version allows agents to abstain, producing richer dynamics analogous to financial markets.