PortalStone

BUILD DUNGEONS. BRAVE PORTALS.

Every portal
has two sides.

The dungeon is someone’s masterpiece. Surviving it is yours. Shape the challenge as a dungeon master, then step through a portal with a hero whose gear becomes their deck.

Choose your side of the portal.
I · THE DUNGEON MASTER
I · THE DUNGEON MASTER
II · THE HERO
II · THE HERO
DUNGEON BUILDING × CARD COMBATBY 404 OAK GAMINGCLOSED BETA

Closed beta, invite only. We’re looking for Asheron’s Call fans to play it and report bugs.

How to join

WELCOME TO PORTALSTONE

The gear is the strategy.

Change what you wear and change the cards you can play. Preparation follows you through the portal.

Make every room a decision.TWO WAYS TO PLAY

CHOOSE YOUR PERSPECTIVE

Make every room a decision.

Place rooms, creatures, and traps. Work within your threat budget and give another hero a challenge worth taking.

WHY PLAY

A battle of builds.

Your dungeon is the challenge

01 / THE EXPERIENCE

Your dungeon is the challenge

Arrange rooms, creatures, and traps within a threat budget. Make choices about the adventure another hero will face.

Wear your strategy

02 / THE EXPERIENCE

Wear your strategy

Your gear shapes your combat deck. Changing equipment changes the tools you bring into the next encounter.

Adventure on your own schedule

03 / THE EXPERIENCE

Adventure on your own schedule

The asynchronous portal loop is built around exploring a dungeon someone else designed, without coordinating a live session.

HOW IT PLAYS

Master the dungeon. Or survive it.

Build the challenge

  1. Place rooms
  2. add creatures and traps
  3. check the threat budget
  4. open the portal

A good dungeon is a set of decisions for its hero, not just a pile of enemies.

An interactive guide to the game’s design.

THE PORTAL LEDGER

Notes from beyond the portal.

Follow the work taking shape, and the chapters still ahead.

Forgejo snapshot fetched 2026-10-19 · Last curated · Development progress, not release notes.

Recent changes, newest first. A change in development may not be available in a public build yet.

in reviewGameplay

More places for a dungeon to call home

Theme work expands the dungeon palette using Asheron’s Call floor textures and revisits which creatures belong in each setting. This is still under review, with compatibility for older runs part of the work.

Read the update
implementedGameplay

Prepare your hero without losing the portal

A tighter hero-and-deck layout brings slot-specific equipment choices, belt items and the portal entrance together. Keyboard navigation and compact deck rows make preparation easier to follow.

Read the update
in reviewBehind the scenes

Hear the portal before choosing its sound

A sound-review workflow lets us compare candidates in context, from room transitions to layered pack openings. The practice tools support reviewing sounds before they are promoted into game assets.

Read the update

CLOSED BETA · NOW INVITING TESTERS

Help us break it.

PortalStone is a free, fan-made card game set in Dereth. Dungeon Masters build dungeons from rooms, creatures and traps; heroes run them with a deck made from the gear they wear. You can play in a browser on simple stand-in models, or use the PortalStone launcher for Windows, which builds the classic AC rooms and creatures on your own PC from your Asheron’s Call files.

  1. PlayBuild a dungeon from your lair deck and open it as a portal. Take a hero through other people’s portals. Open packs, try odd builds, poke at everything.
  2. Press F8 when something breaksThe in-game reporter takes a screenshot and what led up to the problem, and sends it to us with your note. One good report beats ten “it’s broken” posts.
  3. Expect a rough rideIt’s an early closed beta. The server goes down for fixes, balance changes overnight, and progress can be wiped. We’ll warn you in the Discord first when we can.

WAY IN 1

Join the Discord

Invites, patch notes, maintenance warnings and the bug-hunting channels all live there. Sign in to the game with Discord and you’re set once you have the Beta Tester role.

The Discord invite link goes here when the server opens.

WAY IN 2

Request an invite

No Discord? Leave an email address or a Discord username and we’ll send an invite when there’s room.

or

We use what you send only to invite you to the PortalStone beta and to contact you about it. It never goes on a mailing list.

An unofficial fan project.

PortalStone is free and non-commercial. It is not affiliated with or endorsed by Warner Bros. Games, Turbine or anyone else who owns Asheron’s Call, whose names and places belong to their owners. We never host or send Asheron’s Call files or anything built from them. Nothing about this project is for sale, and it takes no money. Outages and progress wipes will happen during the beta.

GOOD TO KNOW

Is it free?

Yes. PortalStone is a free, non-commercial fan project. Packs and items use in-game pyreals and essence only. There is nothing to buy and no way to pay.

Is this live multiplayer?

No live session needed. Dungeon Masters publish dungeons as portals; heroes run them on their own schedule.

Do I need Asheron’s Call installed?

No, you can play in the browser on stand-in models. With your own AC files, the launcher builds the classic rooms and creatures on your PC. We never host or send AC files.

Will my progress be kept?

Not promised. During the closed beta we may reset accounts, cards and dungeons, and we will try to warn the Discord first.

How do I report a bug?

Press F8 in the game. The reporter attaches a screenshot and what led up to the problem. You can also post in the Discord bug channels.