[Deimorz]

This is a great interactive demonstration of this - "The Evolution of Trust": https://ncase.me/trust/

It takes about 20 minutes or so to go through, but I highly, highly recommend it for anyone that hasn't already seen it.

[gibolt]

This is a an amazing game theory simulation!

[Thorrez]

Very nice page. Although it seems to be wrong about the golden rule, the golden rule is "treat others how you want to be treated" not "treat others as they have treated you in the past".