Ys Series

ConsoleNameDeveloperLucca's Observations
DSLegacy of Ys: Books I & IIDreams/FalcomCombined enhanced remake of Ys I and II with 3D and potential multiplayer
GenesisYs IIITelenet/FalcomPlays like the other releases, but with arguably better music and game balance
JP FCYsFalcomAdol bumps into the enemies to slay them
JP FCYs IIFalcomAdds magic to Adol's repertoire
JP FCYs III: Wanderers From YsFalcomChanges the battles to be side-scrolling rather than top-down and allows Adol to swing his sword/jump
JP PC EngineYs IV: The Dawn of Ys (CD)Hudson SoftTechnically different from the Ys IV on SFC/other consoles
JP PSPYs vs. Sora no Kiseki: Alternative SagaFalcomA 3D arena fighting game- very Power Stone-like, where characters from Ys and Trails collide (and level while doing so)
JP SFCYs IV: Mask of the SunTonkin HouseNon-canonical to the Ys series after the release of Memories of Celceta
JP SFCYs V: Ushinawareta Suna no Miyako KefinFalcomOnly game in the series to have never been localized (hopefully this will change?)
Master SystemYs: The Vanished OmensFalcom/SegaSome dungeon areas are horizontally flipped, but is otherwise generally similar to the original release
PS2Ys: The Ark of NapishtimFalcomTechnically Ys VI; Adol can jump now, so that's cool
PS4Ys IX: Monstrum NoxFalcomCarries over a lot of gameplay elements from Ys VIII; Adol's most story/character-heavy tale yet; features new movement mechanics for world traversal
PS4Ys OriginFalcomSee Vita
PS4Ys VIII: Lacrimosa of DanaFalcomHas more dungeons and forms for Dana than the Vita version, at the expense of some costumes
PS4Ys: Memories of CelcetaFalcomAdds a Japanese voice option, otherwise see Vita
PS5Ys VIII: Lacrimosa of DanaFalcomSee Vita, with some slightly enhanced visuals
PSPYs I & II ChroniclesFalcomMostly the same as previous versions, but with a new soundtrack option as well as newly done character portraits
PSPYs SevenFalcomAdds party members to the regular Ys formula, in addition to making weapon types (slashing, blunt) determine an enemy's susceptibility to them
PSPYs: The Ark of NapishtimFalcomCloser to the original PC Japanese version than the PS2 version was; also adds some extra quests; very long and frequent loading
PSPYs: The Oath in FelghanaFalcomRemastered version of Ys III, taking gameplay elements from Ys VI and expanding the storyline with extra scenes
SNESYs III: Wanderers From YsFalcom/Advance CommunicationSimilar to the FC version, but with cleaner graphics and arguably worse hit detection
SwitchYs IX: Monstrum NoxFalcomSee PS4
SwitchYs OriginFalcomSee Vita
SwitchYs VIII: Lacrimosa of DanaFalcomSee PS4
Turbografx-CDYs Book I & IIFalcomAnother way to experience the glory of Adol? Ys, please!
Turbografx-CDYs III: Wanderers From YsFalcom/Alfa SystemIt's sidescrolling Ys- that's all there is to it
VitaYs I & II Chronicles (DL only)FalcomSee PSP
VitaYs OriginFalcomAn Ys without Adol as the protagonist! Has 3 different protagonists and takes place as a strictly interior dungeon crawl, goes back to hack-and-slash spirtes
VitaYs Seven (DL only)FalcomSee PSP
VitaYs VIII: Lacrimosa of DanaFalcomAdol in ARPG action again, with a settlement-building mechanic and up to 3 party members in combat
VitaYs: Memories of CelcetaFalcomConsidered by Falcom to the the real Ys IV; still an ARPG, has party members with a variety of attack types, parrying can reduce damage taken and enable counterattacks
VitaYs: The Oath in Felghana (DL only)FalcomSee PSP
Xbox OneYs Origin (DL only)FalcomSee Vita