One can play psychological games with anyone given that , the other person shouldn't be hurt.Its a moral obligation for all human beings. And I think this thing is universal to all religions. No religion suggests It's follower to hurt other people. This question is just about one religion , that is Humanity. Last but not the least what's the point of having fun at the expense of hurting someone else's feelings. And about money, it can make even the immoral things moral , rest is upto you. :)

In some theoretical frameworks, much of routine human interaction can be viewed as game playing - and insights can be gleaned from that perspective. Toying with people for fun sounds close to bullying to me ... and can end badly! https://www.businessballs.com/building-relationships/transactional-analysis-eric-berne-43/ http://www.ericberne.com/transactional-analysis/