Repeated Prisoner's Dilemma

You face a computer opponent that follows a fixed secret strategy, chosen at random. Each round you both choose at the same time: Cooperate or Defect. Earn as many points as you can.

Payoffs (your points)

Opp CooperatesOpp Defects
You Cooperate 4 0
You Defect 5 1

The opponent earns the mirror‑image payoff.

How long is the game?

After every round there is a 75% chance of another round (and a 25% chance the game ends). You never know which round is the last!

Round
1
Your Score
0
75% chance of another round after this one
#YouOpponentPoints
Make your first move below 👇

Game Over

The game lasted 0 rounds.

0
total points
Per round
0.00
Opponent total
0

Your secret opponent was…