sounds really hot, I'm not really familiar with any self harm games but the way I picture it a group of people in a private online cam site each with list of shared (reasonable) self harm tasks, maybe a few humiliation as well since I'm really into that, and on each turn we roll a dice and get to do which ever random task. the ones that fail to complete their task gets kicked out...and to make things more fun there are skip a turn or safe options as well, so that one or perhaps more lucky person get to witness other people self harming from afar :)