Download the demo from any source. Install. Find the folder of the game. Make a shortcut to the app. Go in the properties of the shortcut and change the target to something like: "C:\Program Files (x86)\Paradox Interactive\Majesty 2 (Demo)\Majesty2-Demo.exe" -editor . When you'll launch the app, you'll be in the editor. Space bar + click drag will move the camera, f1/f2/f3 switch between the 3 modes. Of course, one of the bad side is you must synchronize mod changes across both version and I read in other threads some of that data is not stored the same way. They also explain how to go from base64 and back, it's just it's a pain. Then, take the files you made in the demo and use the described method written here to modify/add files in a pak. Someone posted a map already and helps people with the patch to install it. Use those steps. I'm planning to make a custom app that would basically be a game launcher that would make a freestyle map and insert it in the pak, meaning you need to run it everytime you want to start a map, but it would work. It would more than likely also have a flat terrain or similar, a bit like M1, because that's way easier to do. We'll see with further patch just how rabid they are at preventing modding or if they actually allow it and perhaps even encourage it.