- Ass Pull: Despite being referenced in Ys SEVEN, Earth Goddess Maia revealed in the ending of the game (normal and Golden Ending) and turning into what amounts as a psuedo-Deus ex Machina didn't sit well with some players. That this character effectively changes the subtle lore/mythology of the franchise, alongside pulling a Retgone of all that has happened on the Isle of Seiren makes any future installment going forward less significant when there's a Top God over-looking the background. This is before mentioning whether or not the Retgone affects any previous Ys installments upon going forward with the story post-Ys SEVEN.
- Author's Saving Throw: After the negative reception for the initial localization of the North American release, NIS America announced they were re-localizing the script to correct several scenes and brought voice actors back to re-dub several lines. The patch was implemented into the Sony PlayStation 4 and PlayStation Vita versions on January 30, 2018, while the Nintendo Switch and PC ports were released with it already in place.
- Broken Base: Localization-issues aside, there are some things in Ys VIII players cannot come to agree on.
- Should there have been more party members aside from the six or is there enough as it is, like Ys SEVEN and Ys: Memories of Celceta? That every castaway is pitching in their share of help in beast raids and beast hunts, though off-screen, feels like Falcom didn't make an effort in expanding a playable cast, especially when it comes to characters like Dogi and Thanatos. This becomes particularly strange as the former had been a significant party member in Ys SEVEN and is easily the most prominent recurring character in the series.
- Putting in the murder-mystery at the tail-end of Chapter 2: a welcome change of pace in the narrative or a sub-plot shoehorned in for Rule of Drama?
- Demonic Spiders: The "Bullfroodons" inside the Eroded Valley - these giant frogs blocking certain paths in the caverns are Beef Gates with more Hit Points than previous dungeon bosses at that point in the game, can spew poison to inflict the status effect, will cause rocks to fall from the ceiling, and are capable of swallowing party members whole (on "Nightmare" difficulty, it's a guaranteed One-Hit Kill), are this trope in Nightmare difficulty. The team will even give a What the Hell, Hero? to whomever aggravates one the first time a Bullfroodon is engaged in battle if the party is at low Character Levels to have a reasonable chance of defeating it (unless players are able to pull off successful "Flash Guard" and "Flash Move" maneuvers).
- The humble "Gale Feather" Adventuring Gear, acquired upon mapping out 50% of the island, upgrades the party's dash mechanic. It doesn't sound like much, but jumping forward while in a sprint vastly increases the distance of jumps, allowing players to engage in some minor Sequence Breaking, such as grabbing a "Saint Ring" in the Great Stone Vents, an accessory that halves the cost of SP for attack skills, long before players are able to craft one at Castaway Village.
- "Dynastic Water" is a medicine which completely re-fills the "EXTRA" gauge used for triggering a character's Limit Break. By stocking up on this item and triggering stagger on a boss, players can unload an EXTRA skill, one after another, into it without pause, since using EXTRA skills stops all enemy movement, except the active party, who will keep whittling at the helpless boss, making most fights at any difficulty a cakewalk.
- Of all the attack skills in the game, two in Ricotta's set stand above the rest: "Mighty Orbit" and "Dino Toss" - the former is the only attack skill (upon reaching maximum level) in the game ranked SS, ensuring it causes stagger by building up an enemy's Break Meter the fastest; most enemies will enter stagger after one Mighty Orbit, while bosses in as little as three uses. Although using Mighty Orbit will cause Ricotta to become dizzy and vulnerable, it's possible to trigger a dodge Cancel once the skill is maxed. Meanwhile, Dino Toss not only has a wide attack range, but is still effective at long distances (moreso than Hummel's sniper-based attack skills), making this perfect for beast raids and hunts. Despite its high SP cost, simply give Ricotta an accessory like the aforementioned Saint Ring and have her keep hurling the giant projectile at enemies from a distance.
- Save Scumming will reset all enemies on the map, which is normally a hindrance. However, when dealing with powerful sleeping enemies or when powerful enemies in general chase the party, saving and reloading can temporarily shake them off the party's trail.
- Heartwarming Moments: Late in the game, Quina and Shoebill are seen in the village together. When interacting with them, it appears the two are having a staredown only for Quina to speak up and say, "Got it! After we leave, I'll look after Ricotta in your place!" showing they'd been trying to communicate and succeeded.
- Love to Hate: There's hardly anything redeeming about Sir Carlan - Jerkassery to the extreme about being stranded on Seiren, forcing every castaway to bend to his every whim and doesn't even lift a finger to help. It comes as no surprise when he's the first castaway to say "Screw This, I'm Outta Here!" once the Nameless Ripper attempts to pick off the castaways one-by-one, stealing Dogi's dinghy and rowing out to sea to leave, without giving any forethought there's still a giant sea creature lurking around Seiren to contend with - the very same beast that caused the castaways to be stranded in the first place. Carlan getting his Laser-Guided Karma is effectively cathartic, until it's revealed he survived.
- Memetic Mutation: The Archeozoic Big Hole, used as the perfect example of how much of an utter disaster the initial NIS English translation was*
- Moment of Awesome: The castaways rallying together to defeat the Oceanus and drive it to its lair in order for Adol's team to finish it off. Unlike the beast raids, it's the only time players get to see them actively participate in a battle. Extra points for Dogi and Thanatos for their You Shall Not Pass! moment in holding back a line of Primodials so the rest can still focus their assault on the Oceanus.
- Polished Port:
- The PlayStation 4 release expanded on more game-play mechanics not available in the initial Vita version - AI characters can be told to avoid attacking rather than engage enemies, Dana gets additional abilities and a multi-part dungeon during her segments that occur in the past, while the Eternian Sidequests are explicitly marked on the map, something the Vita version neglected. Beast Hunts, Night Missions, and an expanded Fishing Minigame have all been added to the port. Finally, completing the Bonus Dungeon (Dana's multi-part dungeon in the present) opens the option to adjust the size of the party, while providing accessories that changes a character's weapon type (for example, Adol's sword can deal piercing or striking attributes in favor of his default slashing trait). Furthermore, this version also runs at 60 frames per second, while the Vita version runs at 30 frames per second.
- The PC port eventually became this when a patch was released on January 2020, fixing most, if not all, of the issues the port had and even introduced an experimental 2-player co-op mode.note Also, a new HQ Texture Pack dramatically improves textures in the game including higher resolution textures and mipmaps that are compressed to improve texturing quality and performance, though this DLC exposed a bug that crashes the game which has since been fixed.
- Porting Disaster: Initially, the PC port was one of these. Steam users immediately reported problems such as undetected gamepads, random freezing, game crashes, audio glitches and graphical slowdownnote . Another problem was that many Steam achievements didn't work unless a gamepad was used instead of mouse and keyboard. Fortunately, A patch released in January 2020 finally fixed the issues of the port and even added an experimental 2-player co-op mode.
- They Wasted a Perfectly Good Character: With more than twenty castaways and Ys VIII introducing Tower Defense elements via Beast Raids and Beast Hunts, it's a waste the castaways except Adol's party only provide passive Status Buffs towards the party, Status Ailments against enemies, or occasional attacks, all whose frequency rely on good player performance rather than continuously participating in these events on-screen.
YMMV / Ys VIII: Lacrimosa of Dana