I want to make a skript that sets players to gamemode spectator if they are not present in a table.

[AQika]

on quit:
remove player from {alive::*}
if size of {alive::*} is less than 2:
set {stop} to true
loop {alive::*}:
broadcast "The winner is %loop-value%"
on death:
remove player from {alive::*}
if size of {alive::*} is less than 2:
set {stop} to true
loop {alive::*}:
broadcast "The winner is %loop-value%"

--if player is not in {alive::*}:
-- set player gamemode to spectator

 

[ProxiCent]

you can do that

on death:
set the gamemode of the victim to spectator 
remove player from {alive::*}
if size of {alive::*} is less than 2:
set {stop} to true
loop {alive::*}:
broadcast "The winner is %loop-value%"