Planets：
1. Build Ground Megastructures
2. Restore Ground Megastructures (those that have already been built but disappeared for some reason)
3. Destroy Ground Megastructures
4. For some Advanced Type or higher level ground megastructures, certain planetary decisions could be done; Those which support it will be marked with asterisk (*)

Starbase, Orbital Rings:
1. Construct attachment structures corresponding to the ground megastructure

（Unlock by Ground Megastructure Engineering）

1. Giant Power Station: Produces energy, provides related jobs and bonus (Machine intelligence has additional bonus)

2. Vertical Farm Edifice: Produces food, provides related jobs and bonus (Hive mind cannot build)

3. Mining Pivot: Produces minerals, provides related bonus

4. Advanced Forge: Produces alloy, provides related jobs and bonus

5. Manufacturing Hub: Produces consumer goods, provides related jobs and bonus (Gestalts cannot build, except servitor)

6. Great Laboratory: Produces research points, provides related jobs and bonus (Machine intelligence cannot build)

7. Heaven Colossal: Produces unity and amentity, provides related jobs and bonus (Gestalts cannot build)

8. Commercial Spire: Produces trade value, unity and amentity, provides related jobs and bonus (Gestalts cannot build; Megacorp has additional bonus)

9. War Headquarter: Provide stability, reduce orbital bombardment damage, increase naval capacity and command limits, and increase the number of related jobs

10. Primary Mind Pyramid: Exclusive to machine intelligence; Increase stability, reduce pop maintenance, and enhance research efficiency

11. Hive Farm: Exclusive to hive minds; Produces food, provides related jobs and bonus

12. Administration Axis: Provides modifiers that reduce empire size and penalty from it, provides related jobs and bonus

13. Eco-Dome Complex: Provides housing and pop logistic growth speed modifier, and would provide more if you are a Rogue Servitor

(Unlock by Advanced Ground Megastructure Engineering)

1. Singularity Generator*: Upgraded from Giant Power Station or Mining Pivot. Produces minerals and dark matter, or energy credit (Needs dark matter reactor technology)

2. Bore of the Shroud*: Exclusive to psionic ascension; Provide jobs that produce zro and phisical, society research points, also able to clear Shroud cooldown using energy credits (Needs ability to enter the Shroud)

3. War Headquarter V2*: Upgraded from War Headquarter; In addition to conventional enhancements, it can also attack fleets undergoing orbital bombardment and enemy colossus within the solar system (Needs Planetary Active Defense System technology)

4. Multifunctional Biology Factory: Exclusive to Genetic Ascension; Upgraded from Vertical Farm Edifice; Produces food, provides related jobs and bonus, also pop growth speed (Hivemind and machine intelligence cannot build)

5. Mutant Hive Farm: Exclusive to Hive mind with genetic ascension; Upgraded from hive farm; Produces food, provides related jobs and bonus, also pop growth speed

6. Planetary Computing Center*: Upgraded from Great Laboratory (Machine intelligence can directly build if planet has a Primary Mind Pyramid. Hive mind can't build). Produces research points, provides related jobs and bonus. Also it can absorb pops to provide extra research point output through planetary decision or corresponding colossus weapon.

7. Macro Brain Center*: Exclusive to Hive mind. Produces research points, provides related jobs and bonus. Also it can absorb pops to provide extra research point output through planetary decision or corresponding colossus weapon.

8. Nirvana Factory*: Upgraded from Manufacturing Hub or Advanced Forge. Based on which type of mega it was upgraded from it automatically decides to produce more alloys or consumer goods as the main orientation. And of course you can change it in the option.

9. Universal Finance Hub*: (Megacorps only) Upgraded from Commercial Spire, and provides more trade value; What's more, it can control economy of your country or others to either destroy them or promote them (WIP)

(Unlock by Ultimate Ground Megastructure Engineering)

1. Colossus Assistance Center*: Produces influence, and provide access to use colossus weapon that can be fast loaded. Details could be seen in weapon description.

2. Boundless Realm*: Produces almost all types of resources based on population, as well as basic intelligence and empire size reduction. In the Slack Mode, resources are provided based on the total population, but less resources are provided per pop; Encouraged Mode provides jobs, and produces resources through pops being employed to the job provided.

3. Nano Storm Terminal*: Produce nanites without activating nano storm, consume nanites or other resources during activation to generate a space nano storm that can cover the entire empire. Enemy ships entering systems of the empire's will suffer debuff.

4. Extragalactic Expedition GCS*: After building a remote stargate for the planet, the owner can explore/colonize extragalactic galaxies, or they can also activate the espionage focus mode (by decision) to allow the use of multiple special espionage operations