Make Angel's smelting recipes the best way by disabling direct ore smelting in furnaces. It forces you to go in the advanced metallurgy path. Need angel's smelting.
Small changes concerning balance, gameplay, or graphics.
Like i said in the title when turned off it makes the save game not readable
when i turn it on i can return in the game...
fixed was a bug in factario https://forums.factorio.com/viewtopic.php?t=60874
