Does SCS require a new save game to work?

[Guest Ghosty]

I had already started a campaign before I installed SCS. Is it fine to just keep playing on the current save?

[Jarno Mikkola]

Well not really... but most of the creatures in the areas you have visited won't be greatly affected by the mod. So if you have walked into the last area of the game with invulnerability on, before you install the mod, and then return to each of the enemies... they won't be any better in any way... much.

But any area you have not visited, or monsters are being summoned still in will be in their SCS mod altered versions.