# Heroes of Might and Magic: Olden Era Patch #13: The Mysterious Island

- Product: Heroes of Might and Magic: Olden Era (https://whatsnew.fyi/product/heroes-of-might-and-magic-olden-era)
- Vendor: Unfrozen
- Date: 2026-08-20
- Original notes: https://store.steampowered.com/news/app/3105440/view/692017587063623204
- Permalink: https://whatsnew.fyi/product/heroes-of-might-and-magic-olden-era/releases/2026-08-20-patch-13-the-mysterious-island

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Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **added** — Added new single-player map 'The Mysterious Island' featuring six playable factions with narrative inspired by Jules Verne's novel
- **changed** — Substantially overhauled Arena Mode
- **added** — Re-added hotkey Shift+U to hide the user interface
- **changed** — Updated map generator
- **changed** — Applied balance tweaks and template adjustments
- **fixed** — Fixed a bug where a stack remained in the Overwatch state until the end of the round
- **fixed** — Fixed a bug where over-time damage effects from Pestilent Lich's 'Death's Embrace' ability continued dealing damage on subsequent turns
- **fixed** — Fixed 'Summoning Rite' ability to no longer raise more creatures from a friendly corpse than the target stack had at battle start
- **fixed** — Fixed a bug where Archangels dealt reduced damage when executing counterattacks
- **fixed** — Fixed a bug where Vampire Scholars generated 2 Focus Points when using basic attacks
- **fixed** — Fixed a bug where Angels copied spell effects from an inconsistent number of friendly creatures via 'Forging Perfection'
- **fixed** — Fixed a bug where Pyroboros basic attacks were erroneously amplified by counterattack bonuses
- **fixed** — Fixed a bug where counterattacks by Fauns, Barghests, Armored Hounds, Avatars of War, and Hollow Reapers were not amplified by counterattack bonuses
- **fixed** — Fixed a bug where Energy Phoenixes' 'Supernova' ability damage was not classified as Magic Damage
- **fixed** — Fixed a bug where Dragonslayers' 'Dragon Blood' ability granted immunity to creature abilities
- **fixed** — Fixed a bug where basic attacks and counterattacks of Chanters did not weaken enemies via 'Whisper of Doubt' for the correct duration
- **fixed** — Fixed a bug where Fire Larvae generated 1 Focus Point when performing basic attacks
- **fixed** — Fixed a bug where Diplomacy skill bonuses failed to apply correctly
- **fixed** — Fixed a crash when attempting to cast 'Back to Town!' spell while owning no towns

##### **Greetings, Heroes!**

Today, we are excited to present a major patch featuring a massive new single-player map — **"The Mysterious Island"**! But that's far from all: we have also substantially overhauled Arena Mode, introduced several quality-of-life improvements, fixed a wide range of bugs, and re-added an option to hide the user interface. Balance tweaks, template adjustments, and map generator updates are all included as well.

Read on for the full changelog below!

##### **Steam reviews — thank you!**

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Your reviews help us understand what matters most to you. We read every single one, so please keep them coming — they really do make a difference.

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##### **New Single-Player Map: "The Mysterious Island"**

Map designer Papyjama, creator of one of the most popular custom maps for _Heroes of Might and Magic III_ — **"The Mysterious Island"** — returns with its official remake! The iconic map comes to life anew through the mechanics, factions, and atmosphere of _Olden Era_.

**"The Mysterious Island"** is a large-scale map featuring six playable factions, taking narrative inspiration from Jules Verne's famous novel. The story of **"The Mysterious Island"** is just getting started — its narrative will be expanded in future updates as essential mechanics are introduced, such as the underground level!

##### **Changelog**

_v. 0.80.45_

>

⚠️ **Reminder:** Intentionally exploiting in-game bugs in competitive play can result in a temporary or permanent multiplayer ban! Engaging in such behavior may also violate the rules of the platform you're playing on, risking a platform-wide ban. Don't jeopardize your account for a dubious advantage — play fair!

>

##### **Bug Fixes**

##### **Combat and Creature Mechanics**

- Fixed a bug where a stack remained in the Overwatch state until the end of the round.

- Fixed a bug where over-time damage effects activated by the Pestilent Lich's "Death’s Embrace" ability continued dealing damage over time on subsequent turns.

- The "Summoning Rite" ability of Ra’Shoth, Grand Shoth, and Abyssal Envoys (and their upgraded versions) can no longer raise more creatures from a friendly corpse than the target stack had at the start of battle.

- Fixed a bug where Archangels dealt reduced damage when executing counterattacks.

- Fixed a bug where Vampire Scholars generated 2 Focus Points when using basic attacks.

- Fixed a bug where Angels and their upgraded versions copied spell effects from an inconsistent number of friendly creatures via the "Forging Perfection" passive ability.

- Fixed a bug where basic attacks of Pyroboros were erroneously amplified by bonuses meant strictly for counterattacks.

- Fixed a bug where counterattacks executed by Fauns (and their upgraded versions), Barghests, Armored Hounds, Avatars of War, and Hollow Reapers were not amplified by bonuses affecting counterattacks.

- Fixed a bug where damage from the Energy Phoenixes’ "Supernova" ability was not classified as Magic Damage.

- Fixed a bug where the Dragonslayers’ "Dragon Blood" ability granted immunity to creature abilities.

- Basic attacks and counterattacks of Chanters now weaken enemies via the "Whisper of Doubt" passive ability for the same duration, as intended.

- Fixed a bug where Fire Larvae mistakenly generated 1 Focus Point when performing basic attacks.

##### **Spells and Skills**

- **Diplomacy:**

- Fixed a bug where Diplomacy skill bonuses failed to apply correctly.

- In the Diplomacy creature recruitment window, the purchase button is now correctly disabled when setting all unit quantities to 0.

- Fixed a crash that occurred when attempting to cast the "Back to Town!" spell while owning no towns.

- "Pocket Dimension" can no longer be summoned in locations that are impassable to the hero.

- The "Assemble!" spell now correctly allows interaction only with the hero positioned in the town's visiting slot.

- Fixed a bug where the max-level "Favorable Wind" spell failed to remove the d

_[Truncated at 4000 characters — full notes: https://store.steampowered.com/news/app/3105440/view/692017587063623204]_