Sorry for the late reply. Yes, this is savegame compatible. You can add it at any time and see the benefits. Removing it could cause issues if you've already built a building chain for the removed resource. For this mod, as an example, if you uninstall during a campaign but have already built the iron mine, it will still be there.

Is this savegame compatible?

Thank you for your kind words!

great mod, thank you for taking time to keep these mods running! You rock

Excellent! I shall give it a wee go now then!

I use SFO myself and haven't had an issues. As far as I'm aware, my mods are the only ones on the workshop that make these specific changes.

Any idea how well this works with SFO?

Good idea, thank you. I'm taking care of some family health and then expect to release updates more regularly again.

Hello! I like the way U are going with resource upgrades :) Obsidian for Karaz-a-Karak?