@juergen_hubertok then basically notice how Acheron "solved" the self-inflicted problem. They a) created new mechanics for this particular minigame and b) set the principle that the brawl outcome should not result in the death/injury of people (which is a clear narrative constraint). b) is needed because several people would play with dnd rules and they expect to be able to kill people with fireball spells.You can adapt a) to your needs, but at the end of the day you need to decide what to do with b) in a classic ruleset approach.It is totally ok not to be a fan of narrative systems, but recognize that b) is a narrative problem. Does GURPS give you effective tools to address it?