Odyssey
Last verified 2026-09-07

Pokémon Odyssey Version History & Changelog

Pokémon Odyssey is complete, finished by the developer in June 2025. Current version: v4.1.1 "Expanded Bag".

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Pokémon Odyssey

  1. v4.1.1 — Complete — Expanded Bag

    December 14, 2025 — HackDex listing date; the creator-linked archive predates this listing

    ⚠ Not save-compatible — start fresh

    • Current English release. Adds an expanded, effectively unlimited Bag.
    • Not save-compatible with v4.0.3 saves — intended for new playthroughs.

    Source: Hackdex listing (hackdex.app/hack/pokemon-odyssey), developer-uploaded

  2. v4.1 — Expanded Bag

    circa mid-July 2025 (exact date not confirmed by the developer)

    ⚠ Not save-compatible — start fresh

    • Introduced the expanded bag capacity later refined into v4.1.1.

    Source: PokéCommunity release thread / PokéHarbor changelog

  3. v4.0.3 — Save-file compatibility release

    confirmed live by July 2025

    ✓ Save-compatible with prior version

    • Fixed a crash during an Olympia event in the Fourth Stratum.
    • Fixed an issue with the Expert Belt's chest on Faraway Island.
    • Remains save-compatible with earlier v4.0.x saves — the recommended download for players continuing an existing save.

    Source: PokéHarbor changelog (developer's own patch notes)

  4. v4.0.2

    • Fixed several dialogues and random freeze/glitch instances after beating certain trainers.
    • Removed the friendship-increasing berry shop at the guild; replaced with an NPC that maxes friendship directly.
    • Fixed a bug preventing Leafeon, Glaceon, and Yggdreon from registering in the Dex (not retroactive — required re-evolving).
    • Added "Lullaby" to the sound-moves list; added an Expert Belt on Faraway Island.
    • Added Dex registration for otherwise-unobtainable Pokémon via NPC notes (e.g. Battle Bond Mawile & Kecleon via Silva's notes; Lords of the Sea via Napier's notes).
    • Jigglypuff/Wigglytuff learnset adjusted (Rotten Egg at Lv.10, Lullaby moved to Lv.30).
    • "Quest Log" key item renamed to "Story Log."
    • Mawile buffed (HP 60→80, Speed 50→60, gained Shift Gear); Camerupt rebalanced; Slaking nerfed; "Call: Allies" base power reduced 70→50.
    • Spearow/Fearow's Defiant ability replaced with Rock Head; new sprites for Spearow, Fearow, and Feraligatr.

    Source: PokéHarbor changelog

  5. v4.0.1

    • Dialogue and movement-permission fixes.
    • Fixed a bug in the Lavender Town ghost encounter (8th Stratum) and an issue in Jagged Mountain.
    • Fixed the Dex not showing wild Pokémon encountered in the Sandy Caves.
    • Fixed Vulpix missing from the Wonder Trade pool.
    • Fixed Octazooka and Needle Arm's move priority, and Call: Owl's effect.
    • Removed a redundant double-confirmation prompt from MementoVitae.

    Source: PokéHarbor changelog

  6. v4.0 — Part 4: The Final Boundary (Strata 7–8)

    • Completes the main story — the game reaches full "Complete" status at this milestone.

    Source: PokéHarbor "Narrative Arcs" section

  7. Beta 3.5.1 – 3.5.4

    • Iterative bugfix betas following the Beta 3.0 story content.

    Source: PokéHarbor "Previous Versions" list

  8. Beta 3.0 — Part 3: Truth, Despair and Hope (Strata 5–6)

    planned for ~mid-2024
    • Added the Fifth Stratum ("Abyssal Shrine") and Sixth Stratum content.

    Source: PokéHarbor / Eevee Expo release history

  9. Beta 2.6

    2023-11-18
    • Beta content update.

    Source: Eevee Expo release history

  10. Beta 2.5

    2023-11-03
    • Beta content update.

    Source: Eevee Expo release history

  11. Beta 2.0 – 2.0.3 — Part 1: Between the Azure Skies and Seas (Strata 1–2)

    Jun 30 – Jul 25, 2023
    • Initial public beta releases covering the first two Strata.

    Source: Eevee Expo release history

  12. Beta 1.6

    earliest tracked beta
    • Earliest publicly tracked beta version.

    Source: PokeRomWiki infobox

Pokémon Odyssey II: Heroes of Lemuria

  1. Demo 0.1.3 — Current public demo

    2026-07-31
    • Fixed a crash occurring in wild and Trainer battles after selecting 6 Key Items.
    • Fixed Reflect and Light Screen failing to apply if Safeguard had already been active (also affected Leo's "Antibodies" Union Skill).
    • Rebalanced the Berserker King boss again.
    • Replaced Mienfoo with Scorbunny in the Mountain Pass wild encounters.
    • Additional minor learnset adjustments and typo fixes.

    Source: Hackdex listing (hackdex.app/hack/pokemon-odyssey-ii-heroes-of-lemuria), developer-uploaded

  2. First public build

    first uploaded to Hackdex, 2026-07-03
    • The demo's Hackdex listing was first uploaded on this date, later updated to the current 0.1.3 build on July 31, 2026. We could not confirm whether the initial upload itself was labeled a different version number — Hackdex's page only records the current version and its upload/update dates.

    Source: Hackdex "Details" panel (first uploaded 7/3/2026, last updated 7/31/2026)

Odyssey II has no confirmed full-release date. See Pokémon Odyssey II for details.