Buildings
More actions
Buildings
Buildings form the foundation of every colony in Per Regna. They determine how efficiently a planet produces resources, constructs fleets, develops technology, and expands its influence across the galaxy.
Every colony begins with a limited number of construction slots and gradually develops into a complex planetary infrastructure network.
Buildings unlock progressively as players advance through the different Realms.
Realm 1 Buildings
Realm 1 establishes the foundations of a colony. Players develop their basic economy, begin constructing fleets, and establish scientific research infrastructure.
Production
Infrastructure
Realm 2 Buildings
Realm 2 introduces advanced resource extraction, economic infrastructure, and the first large-scale strategic constructions.
Production
Infrastructure
Lunar Structures
These structures can only be constructed on moons.
Realm 3 Buildings
Realm 3 unlocks high-energy systems, advanced materials, and planetary engineering technologies.
Production
Infrastructure
Lunar Structures
Realm 4 Buildings
Realm 4 contains monumental structures representing the pinnacle of galactic engineering.
Ascension Structures
Cost & Build Time Calculation
Each building has a cost and build time multiplier, by default it is 1.5x but for some facility type buildings it may be higher. Each building page provides these details. For the cost and build time calculation, the formula:
COST = baseCost * costMultiplier ^ level
TIME = CEIL(baseDuration * levelEffect ^ (level - 1) * (1 / (constructionEngineeringLevel * constructionSpeedPct) * engineeringLabEffect)
ENGINEERING LAB EFFECT=
// First phase: levels 1-10, each level decreases time by 20%
firstPhase = 1 + (MIN(engineeringLabLevel, 10) * 0.20);
// Second phase: levels 11+, each level doubles the speed (halves the time)
secondPhase = MAX(0, engineeringLabLevel - 10);
(firstPhase * 0.20) * (2 ^ secondPhase);
For Energy cost it has a different formula:
FLOOR(baseEnergyCost * level * 1.1 ^ level - baseEnergyCost * (level - 1) * 1.1 ^ (level - 1))
Building Categories
Buildings fall into several functional categories:
- Production — resource extraction and energy generation
- Infrastructure — colony management and development
- Lunar — specialized moon-based structures
- Advanced — late-game structures that reshape empire progression
Planetary Development Strategy
Successful empires balance multiple development paths:
Economic Expansion
- Mines
- Reactors
- Refineries
Military Development
- Shipyards
- Hangars
- Defense infrastructure
Scientific Advancement
- Research Labs
- Engineering facilities
Strategic Infrastructure
- Trading Centers
- Warp Gates
- Terraformers
As empires grow, planets evolve from simple extraction colonies into highly specialized strategic hubs.