恆星基地

Mammalian Citadel

A starbase is the primary space station used throughout the game and is used for determining the ownership of a given star system, construction, repair and maintenance of ships, collection and transportation of Trade Value in addition to it acting as a strategic fortress during warfare.

Mechanics

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Constructing a starbase requires first fully surveying the desired system. The build cost is 100  合金（Alloys） and an additional  影響力（Influence） cost on top of that. The influence cost is determined by a fixed cost which is then multiplied by the shortest path of hyperlane jumps (gates and wormholes act as "shortcuts") between the target systems and the empire's closest owned system.

Once built, the starbase will appear orbiting the center point of the system. It cannot be destroyed by any regular means but it can still be dismantled by its owner during peacetime if it is of no more than outpost level (higher-level starbases will need to be downgraded first) and the system is not colonized. If a starbase is dismantled, the system reverts to being neutral and unclaimed and can then claimed by any empire.

Besides the initial influence cost, upgrading the starbase to a higher level above outpost level will cost only alloys. Aside from making the starbase more powerful due to better base stats and the addition of more weapon components, the upgrade also allows the owner to fit the starbase with different buildings and modules to increase its defensive capabilities and improve its contribution to the empire beyond its basic role of system control and defense. One such important module is the Shipyard which enables the construction of military ships in the starbase. Having multiple shipyards on a starbase allows it to effectively act as a "fleet manufactory" by constructing several ships in parallel, simultaneously. Shipyards build order is independent from the main build order of starbase.

Though it is not possible to design a starbase, its components will be auto-fitted with the latest advanced technology as soon as they are made available (at no additional cost to the owner).

Starbase capacity

An empire can in theory have as many starbases as their economy can support but an empire can only maintain a limited number of upgraded starbases bigger than outposts. The number of upgraded starbases an empire can support is dictated by the starbase capacity and exceeding that capacity will cause all upkeep costs for starbases to increase by +25%  （） for every starbase exceeding the cap. This is an empire-wide modifier, and thus affects all starbases owned by the empire. This modifier also affects the maintenance of any modules and buildings on the starbases. Regardless of their level, each starbase bigger than an outpost occupies only one capacity slot and if the need arises, an empire can always downgrade existing starbases back to outpost level to reduce the number of upgraded starbases to within the cap limit.

The base starbase capacity is 3, which can be increased by the following:

• +1 for every 10 systems owned by the empire
• +2 adopting the Unyielding tradition tree
• +2 Fortress Doctrine from Unyielding tradition tree
• +2  Stellar Expansion technology
• +2  昭昭天命（Manifest Destiny） technology
• +2 Fortify the Border edict
• +4  交易所（Trading Posts） civic
• +5 Grasp the Void ascension perk
• +10 Covenant: End of the Cycle
• +1  星際擴張（Interstellar Expansion） repeatable technology (can only be researched 5 times)
• +2 for each Strategic Coordination Center level, except the site of the megastructure (Total: +6)

Warfare behavior

Systems with starbases bigger than outposts require a higher influence cost to claim (25 influence). Consequently, those starbases grant a higher war-score if occupied successfully (10 occupation value). An additional benefit of upgraded starbases manifests in their including an FTL inhibitor which, as long as the starbase remains active, prevents enemy ships from leaving the system via any hyperlane other than the one they arrived through. This allows an FTL inhibitor-equipped starbase to turn strategically important systems into efficient choke points, delaying hostile fleets from leaving the system and advancing further by forcing them into an engagement which may last long enough for reinforcements to arrive.

During war, an attacker must disable the enemy's starbase within the system in order to be able to seize control of any planets within said system. As starbases cannot be destroyed, this is achieved by reducing their Hull points down to 0, disabling them. The starbase will then remain incapacitated for a duration of 30 days (after the latest attack), during which time any military ships in close proximity to the starbase will be able to gain control over it. If the starbase is left unoccupied and is not attacked, it will enter a self-repair phase and become operational again as soon as it regains 5% Hull points. If there are multiple empires fighting on one side of the war, the newly occupied system will then be assigned to the empire with the strongest claim, even if the system wasn't conquered by them.

Occupied starbases are fully operational and can repair ships of the side that controls it, inhibit FTL for "enemy" ships, and manage defense platforms, all empire-wide bonuses will also be applied, including home territory modifiers (The Eternal Vigilance ascension perk's platform cap of the original owner is also temporarily retained). However their buildings and modules cannot be changed, and they cannot be upgraded or downgraded, although they can be returned to the owner.

It's worth noting, that auto-upgrading a starbase can "gift" higher tech components to occupied starbases (including FTL inhibitors), while keeping their own more advanced components. They will stay equipped even if said starbase is reclaimed back, so repeated re-conquering might become harder both sides.

Systems containing an unoccupied starbase or unoccupied colonized planets will not be transferred in a forced status-quo peace.

Level

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A starbase is auto-fitted with the latest components as soon as they are available to the empire. This is done automatically and has no additional cost for the empire - as such this also does not affect a starbase's level upgrade cost.

The weapon slots are fitted with the most effective kinetic and energy weapons (though not necessarily by equal division). The utility slots are divided equally between shield and armor components (auto-fitting does not add hull components here), while the auxiliary slot uses standard auto-fitting of a shield capacitor or auxiliary fire-control (whatever is available in order of priority).

Upgrading a starbase requires technology of the same name and can only be done in sequential order - meaning that if one started with a basic outpost and wants to upgrade it to a citadel, they have to go through every single level in between in order to get to the desired level. Downgrading a starbase, however, reduces its level to the basic outpost level (outpost) straight away - regardless of what level the starbase initially was - and removes any present buildings, modules, and any defense platforms over the outpost's capacity limit. Any resources invested into the starbase prior to downgrading will not be refunded.

Starting from the starport level all starbases can have an FTL inhibitor onboard if technology is available.

Constructing a new Starbase requires 75  影響力（Influence） per hyperlane jump from the nearest owned system.

Note: The table lists the base properties of each starbase level. The actual values themselves will differ due to one's progress in-game (technology, tradition, and etc.), existing modifiers (if any) as well as individual starbase composition (buildings, modules, and etc.).

Level	Cost	（）	Upkeep	Modules	Buildings	Platforms	Trade protection	Hull	裝甲（Armor）	Weapons	Utilities	Repairs docked fleets
Outpost	100	100	1	0	0	3	0	5000	1000	1	2 1
Starport	200	360	2	2	1	6	8	10000	2000	1 2	6 1
Starhold	500	720	3	4	2	9	16	20000	5000	1 4	10 1
Star Fortress	1250	1080	4	6	3	12	24	40000	10000	1 6	14 1
Citadel	3500	1440	5	6	4	15	32	80000	20000	1 12	26 1

Affecting modifiers

Additional modifiers which affect various starbase parameters are summarized below:

Construction and maintenance modifiers

	Outpost influence cost
−50%	噬殺蜂群（Devouring Swarm）
−40%	極端排外主義（Fanatic Xenophobe）
−30%	鐵心滅絕者（Determined Exterminator）
−20%	排外主義（Xenophobe） Interstellar Dominion
−15%	擴張主義者（Expansionist）
−10%	Reach for the Stars

	Outpost build cost
−15%	擴張主義者（Expansionist）
+50%	Machine Empire

	Upkeep cost
−20%	Galactic Ambition
−20%	Unyielding Finisher Effect
+25%	"Exceeding starbase capacity" modifier per excess starbase

Upgrade related modifiers

	Upgrade cost
−50%	Fortress Doctrine
−15%	工兵部隊（Corps of Engineers）
−10%	築防者（Fortifier）  星辰大海（Home in the Sky）

	Upgrade speed
+100%	Fortress Proclamation
+50%	Unyielding Adoption Effect
+25%	工兵部隊（Corps of Engineers）

Military properties related modifiers

	Damage
+25%	Eternal Vigilance
+33%	Defensive Zeal

	Hull points
+33%	Defensive Zeal
+25%	Eternal Vigilance
+10%	Gun Battery Hangar Bay Missile Battery

	Armor hit points
+10%	Gun Battery Hangar Bay Missile Battery

Modules

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A fully upgraded starbase can support up to 6 modules. It is possible to construct multiple modules of the same type and the starbase will be called in the outliner accordingly. Each module takes 180 days to build and costs 50  合金（Alloys）. The alloy cost can be lowered by the following:

• −25% 模塊化工程（Modular Engineering） technology
• −20%  星辰大海（Home in the Sky）
• −10% "Zero-G Innovations" modifier

Module	（）	Effects	Requirements
Shipyard A Shipyard may build one ship at a time, in parallel with other Shipyards.	−1	+1 Shipyard capacity	None
Anchorage Fleet anchorages are necessary to support the growth of our navy.	−1	+4 Naval capacity	None
Gun Battery Adds two medium-size weapon slots to the Starbase.	−1	+2 Medium weapon components +5 Trade protection +1 Protection range +10% Starbase armor hit points +10% Starbase hull points	None
Missile Battery Adds two torpedo weapon slots to the Starbase.	−1	+2 Guided weapon components +5 Trade protection +1 Protection range +10% Starbase armor hit points +10% Starbase hull points	None
Hangar Bay Adds a hangar for strike craft to the Starbase.	−1	+1 Hangar weapon components +10 Trade protection +1 Trade protection range +10% Starbase armor hit points +10% Starbase hull points	航母作戰（Carrier Operations） technology
Solar Panel Network Advances in solar panel technology could offset the operating costs of our starbases.	None	+6 Energy With  解放知識（Unchained Knowledge） resolution 3: +6 Energy	格式塔意識（Gestalt Consciousness） Black Hole Stage II+ Dyson Sphere
Trade Hub A civilian docking area where merchants and traders can conduct business.	−1	+1 Collection range	格式塔意識（Gestalt Consciousness）

Buildings

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A fully upgraded starbase can support up to 4 buildings. Unlike modules, it is only possible to construct a single building of any type. Building cost is reduced by −25% by the  模塊化工程（Modular Engineering） technology.

Building	Cost	Time	（）	Effects	Requirements	DLC
Crew Quarters Provides accommodation and support for spaceship crews, reducing the logistical burden on fleets that are berthed here.	50	180	–1	–25% Docked ship upkeep	格式塔意識（Gestalt Consciousness）
Crew Gestation Chambers The ability to birth and gestate crew drones directly on-site is a logistical boon to local fleets.	50	180	–1	–25% Docked ship upkeep	蜂巢思維（Hive Mind）
Service Umbilicals Service Umbilicals connect berthed fleets directly to the core intelligence of the station, allowing it to assist with repairs and refits.	50	180	–1	–25% Docked ship upkeep	機械智能（Machine Intelligence）
Fleet Academy For our newly recruited crews to be truly combat ready, they must have capable officers leading them. The Fleet Academy will ensure those officers have up-to-date knowledge on the doctrines and practice of interstellar warfare.	100	360	–2	+100 Ship starting experience	Shipyard module  星際艦隊傳統（Interstellar Fleet Traditions） technology  格式塔意識（Gestalt Consciousness）
Battle Simulators Repeated simulation of various battle scenarios will better prepare our shipboard combat drones for real combat.	100	360	–2	+100 Ship starting experience	Shipyard module  星際艦隊傳統（Interstellar Fleet Traditions） technology  格式塔意識（Gestalt Consciousness）
Resource Silo Massive resource silos and energy storage facilities where large quantities of minerals and energy can be safely kept.	50	180	None	+2000 資源儲存上限（Resource Storage Capacity）
Naval Logistics Office A minimal-but-extant bureaucratic layer increases the theoretical capacity of the Starbase's Anchorages.	100	360	–2	+2 海軍容量（Naval Capacity） from Anchorages	Anchorage module  星際艦隊傳統（Interstellar Fleet Traditions） technology
Titan Assembly Yards Specialized drydocks erected on the Starbase's hull allow for the construction of gargantuan Titan-class ships.	500	720	–10	Titan construction enabled	Citadel Shipyard module  泰坦（Titans）nology
Colossal Assembly Yards Abandoning the traditional concept of drydocks, colossal spaceships are assembled by a number of highly mobile independent construction platforms.	1000	720	–20	Colossus construction enabled Juggernaut construction enabled Star-Eater construction enabled	Citadel Shipyard module  巨像（Colossi）nology or  主宰（Juggernaut）nology
Dragon Hatchery Cutting-edge facilities for the rearing of young dragons.	750	720	–10	Allows the construction of Fledgling Dragons if the starbase also has a Shipyard module (does nothing otherwise)	Citadel  與龍共舞（Here Be Dragons） origin conclusion
Communications Jammer These powerful jammers interfere with enemy ship-to-ship communications, making it difficult to coordinate fleet movements.	50	180	–1	–20% Enemy Combat Disengagement Chance in system –20% Enemy Sublight Speed in system
Disruption Field Generator Generates localized fields of agitated subatomic particles around hostile ships in the system, significantly reducing the effectiveness of their shields.	100	180	–2	–20% Enemy Shield Hit Points in system
Target Uplink Computer An advanced targeting computer that collects and analyzes data from all friendly sensor sources in-system. This makes it far easier for the Starbase to achieve targeting solutions.	100	360	–2	+50% Starbase and Defense Platform Weapons Range
Command Center All system defense efforts are coordinated from this large facility, buried deep within the hull of the Starbase. Map arrays and 3D projections track all space traffic passing through the system at any given time.	250	360	–5	+10% Allied Fire Rate in system	Star Fortress  指揮矩陣（Command Matrix） technology
Defense-Grid Supercomputer A powerful supercomputer coordinating the relative orbit and firing arcs of the Starbase's defensive platforms, increasing the number of defensive platforms that can be supported.	150	360	–2	+8 Defense platform cap	同步防禦（Synchronized Defenses）nology
Hydroponics Bay By dedicating a section of this Starbase to Hydroponic farming, the station will be able to feed itself and even export excess produce to other systems.	50	180	–1	+10 食物（Food）	Eco Stimulation technology
Black Hole Observatory By building a specialized science facility dedicated to studying a black hole, our empire will surely be able to see improvements in our understanding of Physics.	100	360	–2	With  暗物質收集（Dark Matter Drawing） technology:   +1 暗物質（Dark Matter）	Star is a black hole  亞空間傳感器（Subspace Sensors）nology
Nebula Refinery By processing the dust clouds of a nebula, we are able to refine and extract valuable minerals.	100	360	–2	+10 礦物（Minerals） With  異星天然氣開採（Exotic Gas Extraction） technology:   +1 異星天然氣（Exotic Gases）	System is inside a nebula  零重力精煉廠（Zero-G Refineries） technology
Deep Space Black Site A large part of this Starbase has been set aside as a Black Site that does not officially exist. The entire system is closely monitored from here, while intelligence operatives carefully manipulate local media and social events to the best of their ability.	100	360	–2	+1 凝聚力（Unity） +25% System Governing Ethics Attraction +5 System Stability	System has a colony  活體國度（The Living State） technology  格式塔意識（Gestalt Consciousness）
Transit Hub Dedicated infrastructure for non-military vessels, enabling a smooth and convenient transit network.	100	180	–3	+100% Automatic resettlement chance for every colony in system	超空間航道突破點（Hyperlane Breach Points） technology
Hyperlane Registrar Assists friendly ships in the system with FTL travel by identifying ideal conditions for entering the hyperlanes and optimizing projected travel routes.	100	180	–2	+1 Collection Range	、​  星際經濟學（Interstellar Economics） 星際經濟學（Interstellar Economics） technology  格式塔意識（Gestalt Consciousness）
Listening Post The Listening Post houses a team of dedicated operators tasked with analyzing hyperlane reverberations, functionally extending the range of the Starbase's sensors.	100	360	–2	+2 探測範圍（Sensor Range） +4 Hyperlane detection range	重力傳感器（Gravitic Sensors）nology
Offworld Trading Company The offices of a non-governmental organ dedicated to improving the conditions of interstellar trade.	100	360	None	+2 Trade value per Trading Hub module	Trading Hub module  Space Trading technology
Ice Mining Station This system is a plentiful source of unexploited ice. By setting up a harvesting station here, we could see it put to better use, creating habitable oceans for our kind. Ice asteroids can be mined once, frozen worlds up to 3 times.	100	360	None	+15% System Mining Station Output Enables the Expand Planetary Sea decision	水之心（Hydrocentric） ascension perk System has a frozen world or ice asteroids
Curator Think Tank By constructing a research facility entirely focused on learning from, and cooperating with, the Curators, we are able to make significant contributions to our scientific progress.	100	360	–2	+5 Research	System has a Curator enclave A diplomatic agreement with the Curators
Art College This zero-g Art College, operated in conjunction with the nearby Artisan Enclave, celebrates the beauty of outer space in the works produced by its talented students.	200	360	–2	+10 Unity	System has an Artisan Troupe enclave A diplomatic agreement with the Artisan Troupe
Trader Proxy Office The Trader Enclave enjoy special privileges on the Galactic Market, which can also benefit us.	100	360	None	-5% Market Fee	System has a Trader enclave Galactic Market access  格式塔意識（Gestalt Consciousness）

Defenses

Mammalian Ion Cannon

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Because starbases are vital targets during warfare, an empire must ensure that they can maintain control over their own starbases to prevent their opponents from seizing control of the system. Investing resources into arming a starbase can allow to function as a strong deterrent to enemy invasions, a powerful supporting power during a fleet battle in the system and a starbase that is heavily armed enough can potentially even repel an entire enemy fleet by itself. Successfully maintaining control over every single starbase in the empire is by itself enough to allow an empire to end the war through a status-quo without losing any systems, earning them a defensive victory.

A starbase's self-defense capabilities can be reinforced with the construction of defense platforms. Defense platforms are smaller military stations that are deployed around the starbase and act as weapons platforms. Defense platforms have two sections for weapon slots which can be outfitted with a wide variety of weapon configurations. They will engage any incoming hostile ships, effectively acting as a supporting weapon, by attacking and distracting them from focusing their efforts on the starbase itself, allowing the starbase to engage the enemies and support the defense platform(s). When compared with ships, platforms are situated between Destroyers and Cruisers classes, their hull and armament slightly better than the former, while their armor-potential is equivalent to the latter. However, due to them having no  閃避（Evasion） whatsoever, individual platforms are still very vulnerable, and if a strong, sustainable firepower is a priority it is wiser to put more turrets on the base itself and only add in Defense platforms once the starbases available armaments have been maxed out.

As opposed to the auto-fitting of the starbase's components, defense platforms can be altered through the ship designer allowing for several designs to be built based on the different needs in each front and upgraded based on this designs. However, unlike ships, their designs cannot be switched once built, necessitating dismantling and complete rebuilding. It also renders any transferred platforms non-upgradeable.

Each starbase can support only a certain number of defense platforms based on its level. However, the defense platform capacity can be increased with the following:

• Globally: +5 Eternal Vigilance, +4/+8/+12 Strategic Coordination Center galactic wonder, +50% Unyielding tradition finisher
• Locally: +8 Defense-Grid Supercomputer

If all of these modifiers are applied, a single starbase can support up to 60 Defense platforms when upgraded to Citadel level. And more if a player gets more than 1 Strategic Coordination Center galactic wonders.

In addition to the regular defense platforms, a citadel-level starbase is also capable of hosting an Ion Cannon, a more powerful platform type that carries a weapon identical to the Perdition Beam titan weapon. It is titan-class hull-wise, but only battleship-class armor-wise. Each Ion Cannon has an upkeep of 8  能量幣（Energy Credits）.

An ion cannon platform is equivalent to 8 defense platforms in terms of capacity slots and can only be constructed on citadel-level starbases.

Defense platform modifiers

Additional modifiers which affect various defense platform parameters are summarized below:

	Defense platform damage
+25%	Eternal Vigilance Secure the Borders
+10%	同步開火模式（Synchronized Firing Patterns）

	Defense platform hull points
+25%	Secure the Borders
+10%	強化核心層（Fortified Core Layers）
+500	改善結構完整性（Improved Structural Integrity）

	Armor hit points

	Defense platform build cost
−33%	築防者（Fortifier）
−15%	Secure the Borders

	Build speed
+100%	Fortress Proclamation

Types

Non-outpost starbases have a designation type automatically assigned to them. This has little effect on a human player aside from aesthetics, but AI empires use these rules to determine what to build on their starbases.

Type	Requirements	Weight	AI type ratio	AI design priorities
Shipyard	Either: Shipyard module No owned starbase has a shipyard module	100 per Shipyard module 1100 if no owned starbase has a shipyard module	0.25 base   +0.10 軍國主義（Militarist）   +0.05 極端軍國主義（Fanatic Militarist）	Modules0 1.00: Shipyard 0.50: Anchorage 0.45: Hangar Bay Buildings0 1.00 Colossal Assembly Yards Crew Quarters Dragon Hatchery Fleet Academy Hydroponics Bay Ice Mining Station Titan Assembly Yards
Anchorage	Anchorage module	100 per Anchorage module	0.45 base   +0.05 軍國主義（Militarist）   +0.02 極端軍國主義（Fanatic Militarist）	Modules0 1.00: Anchorage Solar Panel Network Buildings0 2.00: Art College Curator Think Tank Dragon Hatchery Hydroponics Bay Ice Mining Station Nebula Refinery 1.00: Naval Logistics Office 0.05: Communications Jammer Defense-Grid Supercomputer
Trade Hub	Trade Hub module  格式塔意識（Gestalt Consciousness）	100 per Trade Hub module	0.30 base   +0.05 唯物主義（Materialist）   +0.10 極端唯物主義（Fanatic Materialist）	Modules0 1.00: Trade Hub Buildings0 1.00: Offworld Trading Company Nebula Refinery Art College Curator Think Tank Ice Mining Station Dragon Hatchery Hydroponics Bay 0.25: Resource Silo 0.05: Defense-Grid Supercomputer Communications Jammer
Bastion	any weapon module	75 base +75 per weapon module	0.25 base   +0.10 軍國主義（Militarist）   +0.10 極端軍國主義（Fanatic Militarist）	Modules0 1.00: Gun Battery Missile Battery 0.80: Hangar Bay Buildings0 3.00: Dragon Hatchery Ice Mining Station 1.00: Command Center Defense-Grid Supercomputer Target Uplink Computer 0.90: Communications Jammer Disruption Field Generator Hyperlane Registrar 0.25: Hydroponics Bay

參考資料

遊戲概念