I was surfing around the HLP site, when I found the picture of planetary defence cannon aparently firing from the surface of the planet. So how is this possible, or was the image "doctored". It look real though...
So, is it possible to create a planetary defence beam cannon, that fires and destroys orbiting capital ships ? Even an "illusion" of the working gun would work on my case.
You could just hide a capship very far and give its beam weapon unlimited range, ordering it to fire on specific ships. This would give out impression that Beam is fired from the planet itself, not from the untargetable capship that's hiding against the planet