Trust or Betray?

A one-round decision game. You choose first, then the computer’s hidden choice is revealed.

How it works

You and the computer each pick one option without knowing what the other will do. After you choose, the computer’s choice is revealed and you’ll see the outcome. There is only one round, so you can’t “learn” or change strategy over time.

Computer: Cooperate

Computer: Betray

You: Cooperate

Both do okay (best for the group)

You do worst (you got betrayed)

You: Betray

You do best (short-term gain)

Both do poorly (worst for the group)

Tip: Because you don’t know the computer’s choice, people often feel torn between trust and self-protection.

Play

Press “Start Round” to begin.

Then choose Cooperate or Betray.

Your choice: —

Computer choice: —

Decision time: —