Disabling Peaceful mode on already created save?

[JebK_]

I've never posted on a forum before, and this looked like the right place to put this question.
Is disabling Peaceful mode on an already created (and heavily played) save possible? If so, how would I accomplish doing so?

[Zavian]

I'm sure you could do this with a console command, or you could use this mod https://mods.factorio.com/mod/ChangeMapSettings .

[vincenteam]

Hello, you need to use cheat command.

Start by turn off the peacefull mode then you need to kill all biter to reset them.

command

/c game.player.surface.peaceful_mode=false

/c game.forces["enemy"].kill_all_units()