I think what this conversation illustrates is that ADRPG is not a completely fair, watertight system because it is based on series of novels that Zelazny wrote without ever worrying about making a world that is entirely jackass-proof. NPiA is probably about as close as we come in the books to a pure throne war scenario but even there people do not behave as though the only criterion for success in life is gaining the throne and killing everyone else off. Eric is persuaded to merely blind Corwin rather than killing him because of all sorts of other concerns: fear of his blood curse, very possibly fear of Oberon's reaction should he return, etc. Likewise, in the RPG there's really no good reason why someone should not be able to lure all the other PCs into a field, nuke it from space, and then go off and hide in a bunker for the rest of time. The check on this behavior should be pressure from King Random, the PCs' own parents as well as those of the victim(s), and so on. But this only works if the offending player is actually interested in playing a character who wants more out of life than killing everyone else just for the hell of it. As I say, if you have a player whose only desire is to kill everyone else and who obdurately refuses to acknowledge any kind of in-game social pressure then it seems there isn't much else to do other than try to find a better class of player. It's somewhat akin to playing ping pong with someone who wants get a good volley going versus someone who smashes the ball across the table every chance they get. I suppose that's technically "winning" in some narrow sense but it just doesn't seem that fun to me. Now, I realize that this little rant works quite a bit less well in the context of a throne war, which is supposed to be much more cutthroat, but even then it seems like a little nuance is desirable if the goal is to ultimately to have a good time…