(Experimental release, looking for feedback)
Free territory will attract new demolishers over time. They will only emerge from extended lava pools - so you may try to secure your territory by landfilling everything. It may work. Or not. Better ready the railguns!
Mechanics :
Every chunk containing a majority of lava (at least 800tiles/1024) has a chance to respawn a demolisher when the territory is free.
Spawn ratio is 60% small demolishers, 30% medium and 10% big
Uncommons demolishers may spawn after 100h of playtime in the save, rare from 150h, epic from 200h and legendaries from 250h
Spawn rate is configurable, at normal a lava pool will spawn a demolisher every 10h in average.
First release so balance might be a bit rough, please give me feedback if you like the concept.
Compatibility
Should work with almost anything as long as Vulcanus is a planet. As of now, incompatible with custom quality levels.
Performance
<0.1ms time usage