Plague bomb..

[Arkcon]

Originally posted by Jack Simth:
If the purpose is to render a planet useless (perhaps when deep behind enemy lines where a friendly colony would be immediately captured) then you would want persistant spores. It might be nice if this were moddable, but it makes sense either way; just for different purposes.

Oh you're going for the scorched galaxy plan are you? Well then you'll love the handy dandy Radiation Bomb from Scumco WMD Inc. One hit and the planet is useless for further colonization. Usefull for those pesky alien colonies that you can't colonize yourself, or just because you're a rotten intergalatic despot. Order yours today!