| Name
| Description
| R
|
| Friendly Tit For Tat
| Starts by cooperation, repeats opponent's last choice
| N
|
| Unfriendly Tit For Tat
| Starts by deception, repeats opponent's last choice
| N
|
| Friendly Tit For Tat and Random
| Starts by cooperation, repeats opponent's last choice skewed by random setting
| Y
|
| Friendly Pavlov
| Starts by cooperation, if won in last round does not change, if lost it switches the strategy
| N
|
| Remorseful Prober
| Repeats opponent's last choice, but sometimes probes by defecting instead of co-operating. If the opponent defects in response to probing, shows remorse by co-operating once.
| N
|
| Naive Peace Maker
| Repeats opponent's last choice, but sometimes make peace by co-operating instead of defecting.
| Y
|
| Random
| Always set at 50% probability
| Y
|
| Always Defect
|
| N
|
| Always Co-operate
|
| N
|
| Grudger
| Co-operate until the opponent defects. Then always defect unforgivingly.
| N
|
| Adaptive
| Starts with c,c,c,c,c,c,d,d,d,d,d and then takes choices which have given the best average score re-calculated after every move
| N
|
| Gradual
| Co-operates until the opponent defects, in such case defects the total number of times the opponent has defected during the game. Followed up by two co-operations.
| N
|
