Moogles! Awesome.
No, you cannot destroy a Ringworld in the unmodded game.
However, if you mod the Tectonic Bomb to have an Ability 1 Val 1 := 6, then it will be able to destroy a Ringworld (which is the 6th entry in PlanetSizes.txt, as that is how this value works). Then, you could build a new star, and turn it into a Ring- or Sphereworld. But, it also creates an asteroid belt, which you can build a planet out of (before you build the SW). So, you could do this over and over to make tons of planets in one system (as long as you mod the Tectonic Bombs).
[ November 05, 2002, 07:24: Message edited by: Imperator Fyron ]