[quote=@Arawak] [@Willy Vereb] Not rock solid, but hard enough that stuff like avoiding detection while in a spaceship shouldn't be considered as anything but a lost cause. No FTL exists, but you could if you wanted to beam copies of your mind or an AI at the speed of light between different locations you have the certification for. I tend to be case-case with tech, as I know people can be rather creative with Sci-fi technology and generally I look at balance more than realism. So I'm unlikely to allow for instance, Starlifting and kugelblitz black hole generators or Death Stars. [/quote]Makes sense. Would artificial gravity be okay, then? Also the point of Kugelblitz is to generate a tiny black hole so it's dependent on how much power you have. Also micro black holes aren't behaving like their larger brethren. They are unstable and emit radiate out their energy rapidly so rather than a doomsday scenario where any black hole can consume the planet it's better to think of micro black holes as tiny stars or on the extreme low end as outright explosives. Without some GM authorized technobabble Kugelblitz would also have lot of issues. First, the amount of energy required for a semi-stable black hole (radiates out its energy under years rather than seconds). Second, you can't move these since we talk about an infinitely tiny point of space holding large amount of mass. You can't just push them with a plate or use propulsion to move a black hole (electromagnets might work for certain types albeit we talk about ridiculous mass). Yet they are effected by gravity thus you should absolutely avoid any large astronomical body and their gravity wells. Basically a realistic Kugelblitz generator would be put on a "stationary" remote plant which absolutely never could maneuver and its purpose would be perhaps to provide cheap energy. If you allow gravity manipulation tech then maybe Kugelblitz can be a bit more widespread as power source but regardless you shouldn't think of weaponizing them.