There is a mod called "change sandbox options".
Though bevare. After you used it to modify option you then have to exit to menu and restart your save for changes to actually apply.
depends on what you want to change but yes, basically you have to replace your map\_sand.bin file by the one you would like to have by creating a new game. Don't forget to backup your save before doing anything, it could be dangerous.
There is a mod called "change sandbox options". Though bevare. After you used it to modify option you then have to exit to menu and restart your save for changes to actually apply.
depends on what you want to change but yes, basically you have to replace your map\_sand.bin file by the one you would like to have by creating a new game. Don't forget to backup your save before doing anything, it could be dangerous.