Stellaris create_megastructure command

This command creates a Megastructure in the current system. Press tab to see all Megastructure IDs.
Command syntax
create_megastructure <span class="parameter parameter-primary">Megastructure ID</span>
create_megastructure think_tank_1
How to open the console in Stellaris
Press the ~ / ` key to open the command console. This key is located at the top left of the keyboard, usually under the F1 or ESC key. Type the command and press the Enter key.