Prisoner's Dilemma Arena

Tournament Setup

Configure the parameters for your tournament. These settings affect how matches are played and how evolution progresses.

Rounds per Match

Number of rounds played in each match between two agents (10-1000). More rounds allow strategies to develop patterns.

Number of Generations

Only 1 generation in non-evolutionary mode (single round-robin tournament).

Noise Level (%)0

050

Probability that a move is randomly flipped (C→D or D→C) during execution (0-50%). Simulates communication errors.

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Always Cooperate

Always plays C regardless of opponent behavior.

Always Defect

Always plays D regardless of opponent behavior.

Tit-for-Tat

Cooperates on first move, then mirrors opponent's previous move.

Tit-for-Two-Tats

Cooperates unless opponent defected in both of the last two rounds.

Grudger

Cooperates until opponent defects once, then always defects.

Random

Randomly chooses C or D with 50/50 probability each round.

Pavlov (Win-Stay, Lose-Shift)

Repeats previous move if it scored 3+ points, otherwise switches.

Suspicious Tit-for-Tat

Defects on first move, then mirrors opponent's previous move.