:The command instant_build is your best friend. It doesn't just work for ships; it applies to these massive engineering projects. Just be careful—the AI gets this buff too if you don't pause the game first. Manipulating the Galaxy
: Spawns a megastructure in the selected system. Common mod-specific IDs include matrioshka_brain_0 or dyson_sphere_0 . stellaris gigastructural engineering console commands