1. Basic Structure

(1) Construction Control

Upgrading Construction Control allows for more construction capacity. 

It is advisable to prioritize this upgrade to manage multiple construction orders effectively.

Effect: Increased Construction Queue [Max level 5 - Allows up to 5 construction orders in queue]

(2) Residential Facility

Increasing the Residential Facility expands the planet's maximum population capacity.

As the population increases, so does the income from taxes (Credits). 

However, if the population is low and the tax income is also low, it can be beneficial to build a Disease Control Centre to boost population growth or a Trade Centre.

Effect: Increased Maximum Population Capacity [Max level 30 - 1 billion (on regular planets) / 2 billion (on super-planet)]

(3) Disease Control Centre

Advancing the Disease Control Centre accelerates population growth on the planet. 

The rate of population increase is influenced by the tax rate, with the population growing at its maximum speed when the tax rate is 0%. 

However, once the tax rate reaches 50%, the population no longer increases.

Effect: Increased Population Growth Rate [Max level 30].

(4) Space Port

The Space Port facilitates the movement of fleets, allowing them to enter and exit, as well as providing a base for stationed support forces.
Effect: Enables Fleet Movement [Max level 1]

(5) Space Control

When Space Control advances, you can manage more fleets.

Effect: Increased number of Fleet Commands [Max level 10 - Allows for up to 10 fleet commands].

(6) Barracks

The maximum number of marines increases.

Effect: Increased Maximum Marine Capacity [Max level 30 - Approximately 1 million].

(7) Marine Drill Ground

You can train marines at a faster rate (increased marine training per hour).

Effect: Increased Marine Training Rate [Max level 30].

(8) Warp Gate Control

You need to construct Warp Gate Control to connect Warp Gates with other planets.

By connecting Warp Gates, you can benefit from enhanced trade with the connected planet, earning additional credits, and significantly increasing ship speed to that planet.

Effect: Enables Warp Gate Connection [Max level 3 - Can connect up to 3 Warp Gates].

(9) Planetary Shield

The amount of planetary shield increases.

Effect: Increase in Planetary Shield HP [Max level 30].

During combat, the shield absorbs damage equivalent to its HP.

However, the absorption rate depends on the percentage based on the level of the Planetary Shield Lab, so it is necessary to construct the Planetary Shield Lab as well.

(10) Espionage Agency

As the level of the Espionage Agency increases, you gain access to a wider range of espionage and covert strategies.

Effect: More espionage strategy  options[Max level 10]

Espionage Agency Lv.2: Reconnaissance [Gather information about the target planet]

Espionage Agency Lv.3: Detection Disruption [[Reduce target planet's detection range by half]

Espionage Agency Lv.4: Low-grade Covert Strike [Covert fleets more easily detected]

Espionage Agency Lv.5 - Medium Grade Covert Strike [Covert fleets more easily detected]

Espionage Agency Lv.6 - High-Grade Covert Strike [Covert fleets more easily detected]

Espionage Agency Lv.7 - Low-grade Defence Tower Demolition [Destroy opponent's low-gradeturrets]

Espionage Agency Lv.8 - High-grade Defence Tower Demolition [Destroy opponent's high-gradeturrets]

Espionage Agency Lv.10 - Structure Demolition [Destroy opponent's planetary structures]

2. Resource Structure

(1) Crystal Mines

You mine crystals through the Crystal Mines. The higher the level, the more crystals you can produce.

Effect: Increased crystal production [Max level 30]

(2) Crystal Refinery

Refines crystals.  The higher the level, the more production based on the ratio.

Effect: 2% increase in crystal extraction [Max level 30 - 60% increase in production]

(3) Crystal Storage

You store crystals. The higher the level, the more storage capacity.

Effect: Increase in crystal storage capacity [Max level 30]

(4) Gas Extractory

You extract gas. The higher the level, the more gas you can produce.

Effect: Increase in gas production [Max level 30].

(5) Gas Works

You refine gas. The higher the level, the more production based on the ratio.

Effect: Increase in gas extraction by 2% [Max level 30 - 60% increase in production]

(6) Gas Storage

You store gas. The higher the level, the greater the storage capacity.

Effect: Increase in gas storage capacity [Max level 30]

3. Production Structure

(1) Satellite Factory

This factory produces satellites. As the level increases, you can simultaneously produce more satellites.

Effect: Increase in satellite production queue [Max level 5 - Allows 5 satellite production queues]

(2) Defence Tower Factory

This factory produces defense towers. As the level increases, you can simultaneously produce more defense towers.

Effect: Increased defense tower production capacity [Max level 5 - Allows up to 5 defence tower production queues]

(3) Parts Plant

This factory produces parts. As the level increases, you can simultaneously produce more parts.

Effect: Increase in parts production queue [Max level 10 - Allows 10 parts production queues] - Enables simultaneous production of 10 parts.

(4) Shipyard

This factory produces ships using the produced parts. As the level increases, you can simultaneously produce more ships.

Effect: Increase in ship production queue [Max level 5 - Allows 5 ship production queues] - Enables simultaneous production of 5 ships.

4. Trades Structure

(1) Bank

This is a space to deposit or withdraw credits. 

Higher bank levels allow larger credit withdrawals per transaction.

Effect: Increase in credit withdrawal limit per transaction [Max level 10]

(2) Auction House

As the level of the auction house increases, the capacity for participating in auctions increases. 

Within the total capacity, you can participate in auctions or list items for sale. 

Players must be at least level 15 to participate in auctions.

Effect: Increase in auction capacity [Max level 15]

(3) Trading Post

 Increases the transportation capacity per transaction of resources and goods between your planets.

Effect: Increase in transportation capacity [Max level 20]

(4) Trade Centre

The Trade Centre allows you to generate additional income (credits) apart from population-based taxes.

It is advisable to upgrade it consistently from the early stages, as population growth is slow.

Effect: Increase in income (credits) [Max level 10]

5. Research Structure

(1) Robotics Lab

Through research on construction robots, the planet buildings' construction time is reduced.

1% reduction in construction time per level.

Effect: Reduction in construction time [Max level 30 - 30% time reduction]

(2) Defence Research

By researching defense towers, the production time of defense towers is decreased, allowing for greater production.

1% reduction in defense tower production time per level.

Effect: Reduction in defense tower production time [Max level 30 - 30% time reduction]

(3) Nano Process Centre

Through research on nano processes, the production time of parts is decreased.

1% reduction in parts production time per level.

Effect: Reduction in parts production time [Max level 30 - 30% time reduction]

(4) Minimization Lab

Through the study of parts miniaturization, the required number of parts for ship construction is decreased.

Each level provides a 1% reduction in the required component quantity.

Effect: Fewer components needed for ship construction [Maximum level 30 - 30% reduction in component quantity]

(5) Stealth Tech Lab

By researching stealth technology for satellites, the production time of satellites is reduced.

Each level offers a 1% reduction in satellite production time.

Effect: Decreased satellite production time [Maximum level 30 - 30% reduction in production time]

(6) Construction Tech Lab

Through the advancement of ship construction technology, the time required for ship production is shortened.

Each level results in a 1% reduction in ship construction time.

Effect: Decreased ship production time [Maximum level 30 - 30% reduction in construction time]

(7) Planetary Shield Lab

Through the research of planetary gravity field reinforcement, the planetary shield is strengthened.

The effect is only active when the Planetary Shield is upgraded.

Each level provides a 1% enhancement to the shield (absorbing 1% of enemy fleet attacks).

Effect: Enhanced planetary shield [Maximum level 30 - 30% shield enhancement (absorbing 30% of enemy fleet attacks)]

During battles, the defender absorbs a percentage of the attacker's firepower based on the Planetary Shield Lab level.

Upgrade the Planetary Shield alongside other upgrades to ensure sufficient HP and maximize the absorbed firepower.

6. Other Structures

(1) Star Race Stadium

The race track located on Pirate Planet.

By predicting the race outcomes on Pirate Planet, players can earn Dark Force.

When players successfully place bets on races while occupying Pirate Planet, they can obtain bonus Dark Force.

(2) Pirate Bar

A bar located on Pirate Planet. 

It provides access to various information from across the galaxy.