Making my own game mode.

I am currently making a forge game, my map is ready but I can’t tune the game mode i need. Does anyone know if there’s an option or game mode where the last man standing wins the round? I can’t seem to find one. Is there one? If so what is it called?

I imagine setting any gametype to allow only 1 life would resolve this?

Nope, I tried that on slayer and when you die the game keeps going and you can’t spawn in and the round wont end.