编辑“失落帝国”（章节）

==Strategy==
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General rules:
*Each empire prefers a specific set of weapons that might be tied to the ethics they have. Ships should be tailored to an empire's specific loadout, to maximize effectiveness. While an awakened Fallen Empire can build new ships, it will not redesign them.
*They start with 10 levels of every repeatable technology, but do not seem to research more - when awakened they will, but often taking upwards of 1000 months for a single extra repeatable. Do not try to out-tech them unless you are really far ahead.
*Their planets are heavily fortified and require massive invasions to occupy. Orbital bombardment is essentially mandatory to conquer the worlds without an army strength of 2k+. An empire with access to the [[Colossus]] can use the Neutron Sweep to clear out the inhabitants and then recolonize the planet, although since this will cost you the unique buildings it is likely not the best idea.
*Fallen Empire fleets are far more powerful than the diplomacy menu or fleet power counter might suggest. Their fleets can easily destroy enemies twice more powerful. Before declaring war on Fallen Empires, consider the possibility of losing most, or even all, of your assault fleets. Because of that, other players in multiplayer or powerful AIs will most likely declare war on you during your war with a Fallen Empire, so either leave some of your fleets behind or build up significant starbase defenses.
*Unless you have a massive fleet power advantage, it is not advisable to fight in a star system in which a Fallen Empire has a Citadel unless you have already defeated and weakened their fleets. Fallen empires fight very aggressively, providing plenty of opportunities to fight them in your territory and in star systems of your preference.
*If you have access to War Doctrines, it is generally not advised to select the Hit and Run policy, as high technology discrepancies mean that the Fallen Empire can destroy most ships nearly instantaneously, without giving them any time to disengage. For this same reason, if you have access to the No Retreat policy, selecting it provides a very good bonus {{nowrap|({{iconify|fire rate||+33%|green}})}} for relatively inconsequential disadvantages (your ships are likely to end up being destroyed anyway if they try to flee so the inability to do so is of no concern).

===Sleeping Empire===
A still-sleeping Fallen Empire does not build ships, which makes them vulnerable to a war of attrition or multiple declarations of war in succession. If you have Defensive Pacts with another civilization, it is recommended to provoke the fallen empire into declaring war on you so that you have allies and (hopefully) improve your chances of winning. Corvette swarms equipped with anti-shield and anti-armor weaponry and maxed out evasion should prove quite effective against them and their medium to extra-large guns, but do not fare that well against the Fighter Strike Craft or the Spiritualist Arc Emitters. Their fleets will be at least two 40k blobs, possibly more depending on difficulty. The main goal in the first war should be to acquire their technology via salvage, as this can drastically improve the chances in a second war. Their troop transports should be defeated while in space as they can capture even a fully fortified planet with a normal stack.

Be warned that taking ''any'' Fallen Empire planets increases the chance of one FE awakening massively (to a near certainty), if that did not already happen. This applies to all Fallen Empires, which means that even if you manage to completely annex a Fallen Empire, you might end up waking up another.

===Awakened Empire===
There are several ways of fighting an Awakened Empire, depending on your position when they awaken

The strongest empires can actually stand a chance of facing an awakened Fallen Empire head-on and defeating them in one go. Your long-term goal has to be to acquire as much territory as possible, in particular that of the still sleeping Fallen Empires to acquire their massive resource income and their technology before moving on to open war against the Awakened Empire. Be advised that any system they capture means an additional starbase they might build to reinforce their fleets more quickly and allow large fleets.

Also keep in mind that you can use the Containment casus belli (which will lead to a Total War) against an Awakened Empire regardless of what ethics you have. Use it if you will win.

The second strategy is temporarily submitting to the Awakened Empire. Once they awaken, Fallen Empires will acquire decadence. Decadence reduces their income and fleet power while also increasing the rebelliousness of their subjects. Just be patient, build up your forces and wait for the right moment to rebel and overthrow them.

If an endgame crisis occurs, the Benevolent Interventionists or the Watchful Regulators may become Guardians of the Galaxy. They will stop trying to reduce empires to signatories or satellites and form a federation instead, so it's unnecessary to fight them if they awake late enough.

===War in Heaven===
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A War in Heaven will dramatically change the power balance of the entire galaxy in a short time, since it can quickly become a three-way battle royale that lasts until two of the warring factions are eliminated.

Regardless of which side you choose, remember that War in Heaven is a {{red|Total War}} casus belli, which means that any occupied systems will immediately change ownership. Choose your side wisely and keep in mind that the most important thing is always to survive while trying to either outlast or destroy your opponents. A careless choice may mean the end of your empire.
*If you're too close to one of the awakened empires, joining their side may become the best choice unless you're strong enough to stop their fleets.
*If you're in a powerful federation, or you're far away enough from them, joining the League of Non-Aligned Powers may end up with better results. The league will join the fight shortly after the War in Heaven starts, so be prepared for war.
*If you became more powerful than the Awakened Empires you are safe to remain neutral. Awakened Empires will not declare war on empires with greater Relative Power.
* If you find your empire is in a weird position (e.g. just between two awakened empires or relatively isolated from all other empires), choosing to stay independent might become the best choice.
*If the Galactic Imperium has been formed, both Fallen Empires will automatically declare war on the emperor in addition to each other, and all members of the Imperium will automatically join the Emperor as a war ally. Note that you cannot claim systems that have already been claimed by a war ally once the war has started. You will not be given the option to side with a fallen empire or stay neutral in this case.