Different RPG systems

[kyoryu]

So is character death an opt in thing in Fate? I think Scion does that something like that, it is by arbitration, there no set rules for character death but a player or game master can decide if a player character dying is fitting for the situation or narrative after they are knocked out.

Not really.

When someone is Taken Out, their fate is up to the player/GM that took them out. By convention, that is mostly non-lethal except in particularly dire circumstances. However, there is no rule preventing death in that case. Just most Fate games feel that non-lethal consequences are more interesting. So it's opt-in on the part of the attacker

It is generally considered good form to let players know that you're going to go for the lethal Take Outs.

Players also have the option of Conceding fights - running away, surrendering, etc. In that case, they have some ability to avoid teh worst consequences. However if they fail to do that and are Taken Out, they, by the book, have no input.

Also, any time that logic dictates you're dead, you're dead. You screw up politically enough that you end up with your head in a guillotine? You ded. Jump into a vat of lava? Ded. Do shots of poison for kicks? Ded.