Is this collection released under GPLv2+? I'm setting download for them to modpack installer, and need to know the license.
Don't know. I created the scenarios but I resign to every rights if I had any at any moment. Would be great if you coud add them to the modpack installer. I could even have some newer version to some scenarios with bugfixes or bigger changes. But dont expect much. I dont play them and get even less feedback from players.
Loading some of these to freeciv-2.6 gives warnings about failing sanity checks. The failure is that some tiles have an extra but not its dependency extra. I'm not sure but I think this is that there's tiles with Railroad, but without Road. Same would happen with a Farmland without Irrigation.
I could imagine that "burried" ocean specials are the problem since I covered some ocean tiles with land burring fish and wales.