''Skies of Deception'' is the first game in the ''AceCombat'' series on the PlaystationPortable and the ninth game in the series overall. Released in 2006. It focuses on the southern section of the [[AceCombat5TheUnsungWar Osean Continent]] where you play as a pilot in the air force of the Federal Republic of Aurelia. In 2020, they are invaded by the Democratic Republic of Leasath on the pretext of retaliation for their involvement in a civil war. In just ten days their superweapon, the Gleipnir aerial fortress, [[RecycledINSPACE wipes out almost the entire Aurelian air force]]. Gryphus One is the only survivor of his squadron and must lead the counterattack into Leasath territory.

The game brought a few new gimmicks into the series. The first was its campaign structure, where missions were chosen freely from a list of around 5 and could be done in any order, or [[StoryBranching not at all in some cases]]. The second was equippable parts that would boost certain characteristics of the chosen plane, often at a price. Albert Genette, the reporter from ''The Unsung War'', returns to narrate the story of Gryphus Squadron.
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!! Tropes found in the game

* ArmsDealer: Diego Navarro, the military leader of Leasath.
* BossRemix: "Alect Squadron".
* BonusBoss: [[spoiler:Scarface One and the Z.O.E. Commander]].
* BraggingRightsReward: The Fenrir.
* CherryBlossoms: The Zipang F-14D as a Downloadable Content.
* CivilWar: Partially what led to the events of the game.
* CommissarCap: Leasath commanding officer Diego Gaspar Navarro is seen wearing one.
* ContinuityCameo: The game is narrated by Albert Genette, the same photojournalist who narrated ''AceCombat5''.
* DeepSouth: A lot of people on both sides have exagerrated accents similar to those found in the southern United States. A bit a FridgeBrilliance can be pulled from this, though; Leasath and Aurelia are located on the southern part of the Osean continent, which is the Strangereal version of the United States.
* DiscOneNuke: The XFA-27 may fit this. Also, the F-5E is equipped with [=QAAMs=]. It's balanced by only carrying four, but still, that's effectively four free air kills.
* DudeWheresMyRespect: ''Beautifully'' averted. Some allies outright fanboy Gryphus One in their radio conversations, and at the end it's shown that souvenir shops are selling stuff with his Southern Cross emblem.
* EstablishingCharacterMoment: The Leasathian bombing of a defenceless city in the first mission clearly shows that they aren't quite the MyCountryRightOrWrong {{Punch Clock Villain}}s of other titles. [[spoiler:On the other hand, Albert's investigations show that Leasath is thoroughly taken in by Navarro's speeches about the ''eeevil'' Auralians, and indeed after his last military defeat and destruction of his latest superfighter they're...well, they're quite angry...]]
* FightInTheNude: Adding parts to planes doesn't change their appearance one bit.
* ForTheEvulz: The first Leasath Air Force bomber squadrons you encounter begins to bomb a civilian city. When their operator stops them, it is for wasting ordnance.
%% * FragileSpeedster: The Cariburn.
* HeroTrackingFailure: The Meson Cannon can't keep up with Gryphus One if he flies fast enough.
* IAmNotLeftHanded: The Time Limit mission provides us with one as the player can't accelerate very hard at first, lest you detonate the sensitive ordnance you are carrying to disperse the poison gas that was spread on the city. The enemies in the mission, not aware of your limitations, ridicule your mediocre flying at first, wondering what made you so great in the first place. [[OhCrap Their attitude quickly changes]] once you finish your task and jettison the ordnance, allowing you full maneuverability again.
* InstantDeathRadius: The Gleipnir's Shock Cannon. The mission "In Pursuit" also has an IDR with "high-performance [=SAMs=]" protecting a group of jammers from you.
* InterfaceScrew: A SWBM detonating or a firing of the Shock Cannon results in the screen shaking.
* InvisibilityCloak: The Digital Optical Stealth on the Gleipnir and Fenrir.
* InvisibilityFlicker: The Gleipnir needs to decloak to fire its Shock Cannon. Averted with stealth fighters that can remain off-radar even when firing missiles and decloak only pretty much arbitrarily.
* KarmaHoudini: In one ending, Diego Navarro, the Leasath leader, escapes justice and his BatmanGambit still partially works out. In the other, he's torn apart by an angry mob.
* KickTheDog: You have Leasath bombing a defenceless city ForTheEvulz and the Hamlet unit's biochemical attack on Santa Elva, which may be a MoralEventHorizon-crossing.
* TheLawOfConservationOfDetail: The game loves making use of this for its {{Remixed Level}}s.
* LeeroyJenkins: Ninox 2 , who flies ahead of formation and gets wasted by the Meson Cannon for his trouble.
* LevelGrinding: It makes you unlock a set of colour schemes by kill farming too.
* MookMaker: You have carriers doing this.
* MyCountryRightOrWrong: Averted in some cases; some Leasath soldiers aren't JustFollowingOrders but genuinely buy into Navarro's desire to see the destruction and downfall of Aurelia. Of course, he ''is'' a good speaker.
* MyNaymeIs: We have the Ca'''r'''iburn with a R, whereas King Arthur's first sword is Ca'''l'''iburn with a L.
* NiceJobBreakingItHero: The game offers you various ways of breaking it by choosing or ignoring missions, and the final one is a SadisticChoice that you can't avoid.
* NoEndorHolocaust: The Gleipnir's crashing into the Santa Elva river doesn't injure anyone, which Eugene remarks on.
* NonStandardGameOver: Failing Standoff in the Skies II gives you a [[SarcasmMode lovely]] cutscene of the Gleipnir [[MoralEventHorizon slaughtering a civilian city]] with its Shock Cannon whilst Crux laments all the innocent people that have been murdered.
* OneHitPointWonder: Subverted as a high enough defence allows you to get away with 90+ , maybe 80+ % damage taken... not that many planes are both that survivable and still good dogfighters.
* PixelHunt: Ther's two missions (depending on your mission choices) with radar jamming, forcing you to eyeball tiny targets.
* PunchClockVillain: At least one Leasath shipman would rather be fishing than pursuing war with Aurelia.
* [[RealMenWearPink Real Men Fly Pink Raptors]]: Gryphus One's Southern Cross emblem comes with some cutesy cartoon bird.
* RemixedLevel: Lots of these.
* TheRepublic: Aurelia.
* SadisticChoice: The game asks you how you want to make the final mission harder.
* StealthyColossus: ''Gleipnir''.
* VisibleInvisibility: The Gleipnir and Fenrir use ''Franchise/{{Predator}}''-style shimmer for their Digital Optic Stealth.
* WarForFunAndProfit: The leader of the aggressive nation Leasath, Diego Gaspar Navarro, attacks the country of Aurelia in order to demonstrate the Fenrir, an amazing jet he was planning to sell.
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