Ever wanted to be a Mermaid, Werewolf, Vampire, or Lamia? Now you can with Mermaids and Mythical Creatures! This mod allows the player to transform into a Mermaid when entering the water, transform into a Werewolf at night, transform into a Vampire, and become a Lamia on land and in the water, each with their own unique abilities, playstyles, and progression.

Now updated for v4! Every mermaid wears the brand-new Curve Tail, the Lamia joins as a fourth Mythical Creature, and the Mermaid Trident is ready to forge.

===--===--===--===--===--===--===--===--===--===--===--===--===--===--===--===--===

Features:

Four mythical creatures, each with their own transformation triggers, abilities, and cosmetics.

• Grow a Mermaid Tail, a Lamia's serpent tail, or take Werewolf or Vampire form, and keep your cosmetics.
• Breathe underwater with increased swim speed and night vision as a Mermaid, and lure sea creatures with your Siren Song.
• Prowl the night as a Werewolf with heightened power after dark, and rally your pack with a Howl.
• Stalk the shadows as a Vampire, thriving on devastating critical strikes and draining life with Blood Drain.
• Glide on land and swim through water as a Lamia, with an animation for every move.
• The Curve Tail: three tail styles, thirteen fins, eight colors, ready-made presets, shimmers, and a companion fish, all with an animation for every player animation.
• The Mermaid Trident: a throwable Mithril-tier spear that speeds up your swimming while you hold it in the water.
• Save your own looks as presets, and track your milestones in the Mermaids Codex.
• Custom Mermaid NPCs that spawn in the ocean.
• Mod fully customizable with permissions, config, and an in-game Server Settings menu for every creature.
• Configurable transformation options for every creature -- Example: Transform only by potions, only at certain times, and/or enable for all.
• Translated into English, Spanish (Spain and Mexico), and Chinese.
• Compatibility support with 9+ mods. Including a custom Mermaids mod API.
• Compatibility with Endless Leveling: lock each creature to its race, with full Mermaid, Werewolf, Vampire, Merfolk, and Lamia race lines through Mermaids Premium.
• Compatibility with Orbis Origins as an extension that adds the mythical creature species.
• Works in Multiplayer and Singleplayer.
• and More!

===--===--===--===--===--===--===--===--===--===--===--===--===--===--===--===--===

Mythical Creatures:

🧜 Mermaids

After spending a couple seconds in the water, you'll transform into a Mermaid, growing a tail and gaining increased swim speed, water breathing, and night vision while underwater. Once you return to land, your legs regenerate and the tail disappears (can be modified via config). Every mermaid wears the Curve Tail, a sleek tail with a full fluke and its own animation for every player animation: a dolphin kick in the water and seal-style crawling on land. Pick from three tail styles (Curve, Curve Veil, and Curve Swift), thirteen fins, eight colors, shimmers, and a companion fish, or save your own looks as presets. Sing a Siren Song to lure nearby sea creatures, and forge the Mermaid Trident at the Mermaids Workbench for a swim-speed boost while you hold it in the water. Admins can also turn on drying out, which drains a meter while a mermaid is on land. Custom Mermaid NPCs spawn out in the oceans, and cosmetics like the Seashell Bra and ear fins let you customize your look.

Want something wilder? The Octopus, Manta, and Seahorse tails are $4 one-time purchases at the Treasure Pavilion. They're bound to your Hytale account and work on any server running Mermaids 4.0.0 or newer. They're cosmetic only, and server owners can switch paid content off.

🐺 Werewolves

Werewolves transform based on the time of day: by default, you'll turn into a Werewolf at night and return to human form once daytime arrives, with both the day and night transformation times fully configurable by admins. Alternatively, admins can switch to a potion-only mode, where you'll only transform by drinking a Werewolf Potion (Small 5 minutes, Medium 15 minutes, Large 48 hours, and drinking another adds to your remaining time) or by carrying a Moon Charm, which draws on the moon's power at night to trigger the change. Admins can also disable Werewolf transformations during specific moon phases (Full Moon, Waxing Gibbous, First Quarter, Waxing Crescent, New Moon), and can turn on an optional silver weakness. Rally your pack with /mc werewolf howl, which heals nearby werewolves and slows anything hostile. Players can toggle their own ability to transform on or off, and choose from multiple Werewolf looks through the in-game Werewolf UI, including the Arctic and Midnight werewolves and additional models unlocked through compatible add-on mods.

🧛 Vampires

Vampires can transform in one of two modes, set by admins: always remain in Vampire form, or only transform at night (or by drinking a Vampire Potion). Like the Werewolf potions, Small, Medium, and Large Vampire Potions grant a 5-minute, 15-minute, or 48-hour transformation. Open a /mc vampire drain window to heal from the melee damage you deal, and admins can turn on an optional sunlight-and-blood survival mode. Players can toggle their own Vampire transformation on or off, and customize their Vampire's eye color (and, with Mermaids Premium, skin color) through the dedicated Vampire UI.

🐍 Lamias

New in v4. Pick the Lamia as your active form in the Mythical Creatures menu and you'll keep your own upper body over a long serpent tail, on land and in the water, until you pick something else. No water, nightfall, or potion is needed. On land she glides on a slithering wave instead of running, and her tail pushes her up when she jumps. Choose from twelve tail colors and three optional cosmetics (Cobra Hood, Back Spines, and Scale Fringe) through the Lamia UI with /mc lamia, and toggle the transformation for yourself whenever you like.

Through the Mermaids Premium addon, you can add custom Endless Leveling races for every mythical creature that unlock unique race variations as you progress.

===--===--===--===--===--===--===--===--===--===--===--===--===--===--===--===--===

Roadmap:

• More Mermaid related sea life and/or underwater things.
• More Werewolf and Vampire combat abilities and effects.
• More cosmetic armor for all the creatures.
• More creature-specific cosmetics.

===--===--===--===--===--===--===--===--===--===--===--===--===--===--===--===--===

Commands, Config, and Permissions:

Commands Extra Info:

Permissions Extra Info:

Config Extra Info:

===--===--===--===--===--===--===--===--===--===--===--===--===--===--===--===--===

PARTNERED SERVER:

ÆtherTale:

A second home for those who stay — where solo paths thrive and friendships form. 
From Levelers and Dungeon Grinders to Builders and RPers, every playstyle belongs. 
We strive to bring back the nostalgic feel of entering an old school PvE MMORPG genre. 

• Let them know, you came from the Mermaids and Mythical Creatures Mod: play.aethertale.net:5100

===--===--===--===--===--===--===--===--===--===--===--===--===--===--===--===--===

HOW TO INSTALL:

Client:

Upload the Mermaids.jar file into your %appdata%\Roaming\Hytale\UserData\Mods\ Folder

Server:

Upload the Mermaids.jar file into your servers mods\ folder

Make sure you delete any previous version of Mermaids otherwise your world may not start.

Updating from v3? Your mermaid look moves to the Curve Tail automatically the first time you join. To keep using the original v3 tails and fins, also install the Mermaids v2 Tails addon.

===--===--===--===--===--===--===--===--===--===--===--===--===--===--===--===--===

MOD COMPATIBILITY:

A list of all compatible mods with my Mermaids and Mythical Creatures mod can be found here.

How to enable the Endless Leveling Compatibility Addon information can be found here.

How to enable the Orbis Origins Compatibility expansion can be found here.

===--===--===--===--===--===--===--===--===--===--===--===--===--===--===--===--===

VERSION COMPATIBILITY:

v3.4.0-latest : Designed for Hytale Update 6 (v0.6.x)

v2.8.0-v3.3.2 : Designed for Hytale v0.5.x

v2.0.0-v2.7.2 : Designed: 2026.03.26-89796e57b & 0.4.0

v1.3.6-v1.4.3 : Designed: 2026.02.17-255364b8e

v1.3.0-v1.3.5 : Designed: 2026.01.27-734d39026

v1.0.0-v1.2.7 : Designed: 2026.01.13-dcad8778f - Supported Until:  2026.01.24-6e2d4fc36

===--===--===--===--===--===--===--===--===--===--===--===--===--===--===--===--===

Mermaids Premium:

Mermaids Premium is a separate, optional paid addon jar that sits on top of the base Mermaids and Mythical Creatures mod, adding extra cosmetic and progression content for supporters. Everything it adds registers straight into the menus you already use, so there's nothing new to open and nothing new to learn. It requires the base mod to be installed, and unlocks additional integration if Endless Leveling is also present.

• The Orca and Dolphin tails: whale flukes on the Curve Tail's body, with four whale fins of their own.
• 215 extra tail colors across 13 palette families, on every Curve tail.
• 18 companion species, 24 exclusive shimmers, and 7 curated tail presets.
• Extra Vampire eye and skin colors.
• Five full Endless Leveling race lines (Mermaid, Merfolk, Werewolf, Vampire, and the new Lamia), each with its own custom passives, so your Mythical Creature choice actually feeds into your character build.

Get Mermaids Premium at The Trove, or support the mod on Patreon at any tier and grab the Premium jar from the latest posts on the Patreon page. Then drop it in your mods folder alongside the base mod. Full details can be found here.

===--===--===--===--===--===--===--===--===--===--===--===--===--===--===--===--===

Known Bugs:

• You keep your tail for a small amount of time once you go on land.
• Animations are weird when you hit a block or when you're above water.
• Werewolf and Vampire animations are still a work in progress.

===--===--===--===--===--===--===--===--===--===--===--===--===--===--===--===--===

Support the Creator of Mermaids:

Support me on Patreon or through my store to help me continue to make mods for Hytale. You also can support me by using my creator code SIREN at checkout.

===--===--===--===--===--===--===--===--===--===--===--===--===--===--===--===--===

===--===--===--===--===--===--===--===--===--===--===--===--===--===--===--===--===

===--===--===--===--===--===--===--===--===--===--===--===--===--===--===--===--===