Thank you for your answer. The Prisoner Dilemma is just for Inquisit 5. Is there a possibility to get it for Inquisit 4?
The others are not what i am looking for. I am looking for a social dilemma which is in a environmental context, e.g. fishing (2 Persons need to decide if they want to fish for themselve, but if both fish to much, there won't be more fish)