This document defines the long-term design philosophy of Planetary Identity. It is a decision-making framework for future development, not an implementation plan and not a task tracker.
Planetary Identity is no longer only a bug-fix fork. It is a planetary specialization and planetary destiny framework for Stellaris that is designed to integrate with the wider mod ecosystem.
Planetary Identity exists to answer one core question:
What has this world become?
The project centers on meaningful choices, planetary identity, roleplay expression, and long-term progression. It does not exist to add another stack of generic economic modifiers.
Players should remember planets as places with character and purpose, not only as optimized resource nodes.
Planetary Identity is designed under the assumption of compatibility and integration with major ecosystem mods, especially Planetary Diversity and Gigastructural Engineering. These projects occupy different design spaces and should be treated as complementary layers.
Planetary Diversity represents settlement and expansion across a colony's local system. This space includes concepts such as moon bases, planetary outposts, orbital infrastructure, and local colonial buildout.
Planetary Diversity answers:
How developed is this colony's local system?
Gigastructural Engineering represents industrialization and large-scale exploitation. This space includes asteroid industries, gas giant refineries, and industrial megaprojects that transform economic throughput.
Gigastructural Engineering answers:
How industrialized is this empire and its systems?
Planetary Identity represents planetary destiny and identity. It must not attempt to replace Planetary Diversity infrastructure systems or Gigastructural industrial systems. Instead, it should build on top of those systems to define unique planetary outcomes.
Planetary Identity answers:
What has this world become?
The objective is to create worlds with identities.
A player should be able to look at a world and immediately understand its role within the empire and the story behind its development. Planetary outcomes should feel distinctive and memorable.
Examples of intended identity language include:
- Molten Hyperforge
- Shroud Sanctuary
- Tidal Nexus
- Cognition Center
The design target is memorable planetary stories over spreadsheet optimization.
Planetary Identity should avoid content that is functionally equivalent to generic percentage modifiers. Designs that only provide familiar resource bonuses tend to overlap with existing Stellaris systems and dilute project identity.
Preferred transformations are those that:
- Change the role of the planet
- Create meaningful tradeoffs
- Alter development priorities
- Support roleplay and empire identity
Planetary Identity should focus on planetary identities, not incremental upgrade ladders.
The intended progression arc is:
Settlement -> Industrialization -> Planetary Transformation
Illustrative destiny arcs:
- Lava World -> Hyperforge Conversion -> Molten Hyperforge
- Ocean World -> Tidal Development -> Tidal Nexus
- Psionic World -> Shroud Integration -> Shroud Sanctuary
- Machine World -> Computational Expansion -> Cognition Center
These are identity trajectories, not merely economic upgrades.
The vanilla decision interface is already crowded. Planetary Identity should not rely on many repetitive button presses.
Preferred decision traits:
- Rare
- Meaningful
- Permanent
- Mutually exclusive where appropriate
A Planetary Identity decision should feel consequential. The player should rarely be asked to click a Planetary Identity-specific action, but when asked, the choice should matter.
When representing major planetary change, favor project-like pacing:
Decision -> Situation -> Transformation
This is preferred over instant modifier application:
Decision -> Instant Modifier/Build time until instant result
Situations improve narrative pacing, player anticipation, and thematic weight. Planetary transformation should feel earned through process, not granted as an immediate stat change.
Planetary Identity is designed as part of a layered ecosystem model:
Layer 1: Settlement and Expansion (Planetary Diversity)
Layer 2: Industrialization (Gigastructural Engineering)
Layer 3: Planetary Identity (Planetary Identity)
Each layer should complement the others rather than replace them. Design decisions should preserve this separation of responsibility.
The project should evolve deliberately and with strong scope control. Depth is prioritized over breadth.
Recommended growth sequence:
- Stabilize the existing mod based on fork of Planetary Mega Engineering.
- Resolve legacy bugs.
- Improve compatibility.
- Prototype one planetary transformation framework.
- Playtest extensively.
- Expand only after the framework proves enjoyable and robust.
Large content expansion should not happen before the core framework is validated. One excellent and cohesive planetary destiny is more valuable than many unfinished concepts.
The long-term goal is a Stellaris experience where planets feel genuinely unique.
A developed world should communicate:
- The nature of the planet itself
- The character and priorities of the empire that shaped it
- The consequential choices made across its development
Success is achieved when players remember specific worlds years later because of what those worlds became, not because of the size of their bonuses.