Can this mod be added to an existing game? If yes, will it generate lead fields on the map?

Yes it can be added, and it will generate lead ore patches on Nauvis, in newly explored chunks.

Don't think that lead ore are generated on the map. I couldn't find it when enabled plugin on the existing game. Removed plugin.

It works, I think I couldn't find lead ores because of map settings. And I explored quite big area and I still don't have trains, so I can't get that resource.

Yeah that's a good point, default map settings might make it very hard to find lead if you've explored a bunch already.

I've added a /bz-regenerate command that can be used to regenerate ores on already expored chunks. Using it in game without any other parameters will show you usage instructions.

This is amazing, thank you! Can’t wait to try it out

Thanks for this, but dont work with tin ore, maybe next Natural Gas ?

@patrykbono, /bz-regenerate is using a factorio API built in, and turns out that sometimes doesn't work well. I've noticed that while it generally respects map seed, it sometimes doesn't, and sometimes can overlap ore patches entirely. Here, I am guessing that the patches are overlapping another ore entirely, but smaller (because tin patches are not as big as some other ores), so it can't make any actual spots with ore.

My recommendation if you run it and it doesn't work is to make sure your game is saved, and then play with the numbers a bit.

If /bz-regenerate all is not working when you add Tin, try /bz-regenerate nauvis tin-ore 2 1 1 for example, or bz-regenerate nauvis tin-ore 1.5 1.5 1

I will update the in-game usage instructions in an upcoming update as well.

I will take another look at Natural gas. Might do another one first but we'll see

Thanks, I just begin second game. Thanks and wait for rest your mod