Why can't I build Terror Stars ?
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Stardock Forums
Having 10 starbases with 503% cultural influence each near the enemy sector, I was waiting for Terror Star technology to move them over to convince those aliens to join my cause. However, I've researched EVERYTHING besides the 4D stuff yet (because I suspect that I'll just win the game if I do), and there seems to be no way to build terror stars. I'm not good (no white interface), and when the UP voted on outlawing terror stars, it was voted off.