production Building Comparison
Metal Mine vs Module Factory
Comparing the Metal Mine and Module Factory, both production buildings in Starforge MMO. Base plots and energy upkeep are scarce, so use this to decide which structure earns its slot first.
Build & Output Comparison
| Attribute | Metal Mine | Module Factory |
|---|---|---|
| Max level | 20 | 10 |
| Base cost | 200 metal, 100 crystal | 1,500 metal, 1,000 crystal |
| Upkeep | 10 energy | 30 energy, 15 metal |
| metal production / level | +50★ | — |
| module craft slots / level | — | +1★ |
★ marks the higher per-level output. Compare against your base's current bottleneck before committing a plot.
Metal Mine
Extracts metal from planetary crust. Core income source.
Module Factory
Crafts weapon and defense modules. Required for advanced modules.
Requires tech: shipbuilding 2
Requires building: shipyard
Which Should You Build First?
Both are production buildings, so the choice depends on your current bottleneck. Prioritise the structure whose highlighted per-level output addresses your scarcest resource, and weigh that against its energy upkeep — a high output that drains your power grid can stall the rest of your base.