About Content Ancient Cult
From ThunderstoreA cult castle, a 12-floor dungeon, stone creatures, 3 mini-bosses, treasure hunting and Astronikus. Old-school exploration and puzzle quest. Full multiplayer sync.
Children of the Ancient Heart
An old-school exploration and puzzle quest for Valheim: a cult, a castle on a mountain top, a twelve-floor guildhall under it and something very large at the end.
🌐 Website: hypnomods.pages.dev/coah · 💬 Discord HypnoMODS
> Works with Better Archery (since 1.1.1): the backpack's row goes above the quiver rows, so arrows and backpack items no longer mix. Note that Extra Slots switches Better Archery's quiver off by itself.
> For Mountains and beyond: bring Mountain-tier gear (about 70-80 armor, resistances, potions). No arrow tells you what to do next - explore, read, remember, come back.
At a glance
- Castle on a mountain top (one per world, own path, indestructible) and the Old Cultist Guildhall, a 12-floor dungeon under it
- 6 stone creatures, 3 cultists and 3 named mini-bosses (fire, frost, earth)
- 3 altars, 3 insignia, the Ancient Heart, the Old Mechanism and a 28 m stone colossus
- Astronikus: the boss, in his own cavern; rain of fire, burning floor, 10,000 HP.
- Cwanytyp: a gremlin trader with trophy contracts, rumours, oil and insignia
- Treasure: about 320 chests buried fully under the ground (Wishbone) and up to 300 crates and barrels of lost cargo at sea
- Heart Portal: a buildable portal to any portal of the world
- 4 backpacks: a lighter last row of the inventory, extra carry weight (+50 to +150), an extra row, portal and ship slots. Made from Leather Scraps and Midnight Thread
- 5 stone carvings (3 m) to build from Astronikus' letter, 50 stone each
- Server is the only authority: it draws, creates and fills everything. Everyone needs the same coah.dll
More pictures

How it goes
- Find the castle (it shows on the map from about 500 m, or Cwanytyp marks it for you after a round of contracts once Bonemass is dead).
- Dig up chests and cargo for the insignia and the mechanism's lever, cogwheel and oil; Cwanytyp pays in them too.
- Repair the Old Mechanism; its portal opens the guildhall.
- Put each insignia into its altar (E) and kill the three guardians.
- The Ancient Heart opens the way to Astronikus. He leaves a Heart of Astronikus (builds the Heart Portal).
Spoilers are in COAH-player-guide.html.
Backpacks
Worn in the utility slot. Leather Scraps and Midnight Thread come from Cwanytyp's contracts; the recipe appears once you hold either. All at a workbench:
| Backpack | Workbench | Cost | Gives | |---|---|---|---| | Basic | 3 | 20 Leather Scraps, 10 Deer Hide, 10 Midnight Thread, 5 Thistle | last inventory row 20% lighter, +50 carry weight | | Enhanced | 4 | Basic + 15 Scraps, 10 Thread, 1 sack of dust | the same, +75 carry weight, plus portal slots | | Superior | 4 | Enhanced + 20 Scraps, 15 Thread, 2 sacks of different colours | +1 row, 20% lighter, +100 carry weight | | Masterwork | 5 | Superior + 25 Scraps, 20 Thread, 3 sacks (blue, green, red) | +1 row, 25% lighter, +150 carry weight, slots for portal and ship materials |
Sacks of magic dust (workbench 4, recipe appears once you hold the key): an altar insignia ground up with 5 Crystal - Frostpeak Aegis + 20 Greydwarf Eye = blue, Emerald Crystal Cluster + 5 Guck = green, Emberforge Key + 10 Surtling Core = red. An upgrade takes the backpack below with it; what lies inside goes over.
Works with SeneaL UI (since 1.1.4): the portal and ship slots stay in a small dock with a hide button under its inventory panel. Also with Extra Slots and Better Archery. If an update of one of them ever breaks the backpack, switch its way off in [Compatibility] (SeneaLUI, ExtraSlots, BetterArchery; each player decides in their own config).
Installed together with Advanced Backpacks or Advanced Portal: those step aside - Advanced Backpacks you carry become COAH backpacks with everything inside, Advanced Portals already built keep working but new ones are COAH's Heart Portal.
Installation
Highlights
From source dataLoaders
Runs on BepInEx.
Footprint
Rated a light load on a server.
Last update
Its author last shipped an update 12d ago.
Content Ancient Cult on Nxeon
From our catalogue- One-click install
- Supported on Nxeon Valheim servers, for BepInEx servers. We download it from Thunderstore, place it, and restart the server.
- Server side
- Required on the server
- Server type needed
- BepInEx
- Server load
- light
- Smallest plan we suggest
- Valheim — 4 GB (4 GB RAM). This follows our own load rating above, not a benchmark.
- Latest build
- 1.2.0, released 2026-10-23
Game versions by loader
| Loader | Game versions | Newest |
|---|---|---|
| BepInEx |
From 10 recorded builds of Content Ancient Cult.
Recent builds
| Build | Released | Game versions | Loaders |
|---|---|---|---|
| 1.2.0 | 2026-10-23 | n/a | BepInEx |
| 1.1.10 | 2026-10-22 | n/a | BepInEx |
| 1.1.9 | 2026-10-21 | n/a | BepInEx |
| 1.1.8 | 2026-10-21 | n/a | BepInEx |
| 1.1.5 | 2026-10-20 | n/a | BepInEx |
| 1.1.4 | 2026-10-19 | n/a | BepInEx |
Dependencies
- Required: BepInExPack Valheim
Declared by the newest build that lists any. Required ones are installed with it on one-click installs.
Run Content Ancient Cult on a Valheim server
Pick a server or deploy a new one above; it is installed in one click.
What kind of mod it is
From the catalogBuilding & decoration
Blocks, furniture, decorations and building tools.
Runs on your server
From source side supportThunderstore lists Content Ancient Cult as required on the server. Check its Thunderstore page to see whether players need it too.
Compatibility
- Game
- Valheim
- Loaders
- BepInEx
- Runs on
- Serverrequired on the server
- Requires
- One-click install needs a BepInEx server.
Verified at the source
- ✓ThunderstoreOfficial listing, checked 2026-10-24Open ↗
- ✓AuthorHypnogoogic, as published on Thunderstore
- ✓LicenseNot published by the sourceFree





