The mod uses a unique tech tree that often feels separate from the vanilla game. To unlock specific Gigastructural buildings or structures without waiting for the RNG to favor you:
Example: To unlock the technologies required for the Birch World, you would need to manually unlock the specific precursors and the giga_birch_world_tech equivalent ID found in the tooltip. stellaris gigastructural engineering console commands
effect = from = set_megastructure_stage = <stage_number>
Stage numbers start at 0 (under construction) → last_stage (complete). The mod uses a unique tech tree that
Example for partial completion: effect = set_megastructure_stage = 3 Example: To unlock the technologies required for the
| Structure Name | Spawn Key | Notes |
|---|---|---|
| Attack Moon (Tier 1) | attack_moon_1 | Basic moon. Requires a moon or small planet in system. |
| Attack Moon (Tier 2) | attack_moon_2 | Upgraded version with better weapons. |
| Behemoth Planetcraft | behemoth_planetcraft | Requires a barren or molten world in system. |
| System-scale Complex (Fully upgraded) | system_complex_max | Spawns a fully upgraded system complex. |
| Birch World (Frame only) | birch_world_frame | Spawns the scaffolding around a supermassive black hole. |
| Birch World (Inhabitable) | birch_world_habitable | Fully built Birch World with districts. Warning: Can cause extreme lag. |
| Matrioshka Brain (Level 1) | matrioshka_brain_1 | Star-based computing megastructure. |
| Matrioshka Brain (Level 4) | matrioshka_brain_4 | Max level Matrioshka. |
| HRAE-MC (Quasi-Stellar Obliterator) | hrae_mc_stage_5 | The weapon that kills galactic cores. Use with caution. |
| Nicol-Dyson Beam (Phase 3) | nicoll_dyson_beam | System-killer weapon. |
| Gargantuan Ringworld (4 sections) | gargantuan_ringworld_1 | Larger than vanilla ringworlds. |
| Yggdrasil Orbital Complex | yggdrasil_complex | Provides food and society research. |
| Stellarcraft (Stellar Systemcraft) | stellar_systemcraft | The most powerful ship in the mod. Requires a barren world and asteroid. |
| Flusion (Unique Planet) | pc_flusion | A core Gigas planet (used in the Kaiser's storyline). |
Important: Spawning a structure via spawn_megastructure does not check for valid location. You can spawn a Birch World around a red dwarf (it will look weird but might work). For stability, always use debugtooltip to verify the target celestial body's class.