Text-Based RPGs Online: What They Are and Where to Play Them

A text-based RPG is a role-playing game where the world is described in words and you act by writing what your character does. There are no graphics to wait for: the scene, the other characters, the rules and the result of every roll reach you as text. Online you can play one in four main forms today: MUDs, the multiplayer text worlds that have run since the late 1970s; interactive fiction, the text adventures and their descendants; play-by-post games on forums and chat servers, run by human Game Masters; and AI-run games, where a language model narrates. This guide explains each one, what separates a good text RPG from a frustrating one, and how to start in your browser tonight.

Short answer: what a text-based RPG is#

Every text-based RPG, from a 1980 university MUD to an AI table in 2026, has the same three ingredients:

• A character you control. You speak and act for one person in the story, with abilities, possessions and a history.
• A world that reacts. Something describes the scene and answers your actions: a program, a human Game Master or a language model.
• Rules that decide outcomes. Stats, dice or game code settle whether the lock opens or the arrow hits. Without this part you have collaborative fiction, which is fun, but not a game you can win or lose.

The third ingredient is the one most people overlook, and it is the clearest way to tell text RPGs apart. In some, the rules are hard code; in some, a human GM applies them; in some, nothing applies them at all and the story simply goes where the narrator wants.

From MUDs to AI Game Masters: a short history#

Text RPGs are older than graphical ones, and each generation solved a problem the previous one left open.

• Mid-1970s, text adventures. *Colossal Cave Adventure* let a single player explore a cave by typing short commands such as "go north" or "take lamp". *Zork*, written at MIT at the end of the decade and later sold by Infocom, made the genre famous. These games had puzzles and a fixed story, but little in the way of character stats.
• 1978, the first MUD. Roy Trubshaw and Richard Bartle wrote MUD1 at the University of Essex: a text world shared by several players at once. Through the 1980s and 1990s thousands of MUDs appeared, with classes, levels, combat and player economies. They are the direct ancestors of the graphical MMORPG.
• 1980s, gamebooks and play-by-mail. In print, gamebooks such as the *Fighting Fantasy* series turned the text adventure into numbered paragraphs plus dice. By post, play-by-mail games let groups play strategy and role-playing games one letter at a time.
• 1990s and 2000s, play-by-post. Internet forums took the play-by-mail idea online. A human GM posts a scene, players reply with paragraphs of prose, and a story unfolds over weeks. Today the same form lives on in community chat apps as well as forums.
• From 2019, AI narrators. Language models made it possible to type anything at all and get a coherent reply; early AI story apps were the first to show that to a wide audience. The new problem was the old third ingredient: a pure language model has no rules, so the narrator decides every outcome. Newer tools split the job, letting the AI narrate while software keeps the dice and the world state.

Each form is still alive. That matters for you, because the best choice depends less on which is newest and more on what you want from an evening: puzzles, a crowded shared world, slow careful writing with real people, or a Game Master available at any hour.

The main kinds of text-based RPG you can play online#

MUDs: the shared world

A MUD is a persistent world on a server, and the other characters in the tavern are real people logged in at the same moment. The strength is community and depth: mature MUDs have decades of content, crafting, guilds and politics. The cost is the learning curve. You talk to the game in a command vocabulary, the first hour is mostly reading help files, and the narration is a set of pre-written room descriptions rather than prose written for your particular choice. Many MUDs can now be played through a web client in the browser instead of an old-style telnet program.

Interactive fiction: the authored story

Interactive fiction (IF) is the modern name for the text adventure, and it is a lively field: new games are released every year, many free, and many play directly in the browser. Parser games still use typed commands; choice-based games, often made with tools such as Twine, let you click between options. The writing can be excellent because a human wrote every line. The limit is the same reason: you can only do what the author anticipated. IF is closer to a novel you steer than to a tabletop session.

Play-by-post: the human table, slowed down

Play-by-post is a tabletop campaign conducted in writing. A Game Master describes a scene in a thread, each player answers in character, and the GM resolves the actions, rolling dice openly with a bot. It gives you what no program can: real people who remember your character's joke from three months ago. It asks for patience in return. One fight can last a week, and campaigns fade when the GM's life gets busy. If you like the format but cannot match your friends' schedules, playing online with friends has practical rules for keeping a posting rhythm alive.

AI-run games: the GM who is always awake

AI-narrated text RPGs answer free text in seconds, at three in the morning, in the middle of a lunch break. That changed who can play: a solo player no longer needs to be their own narrator, and nobody has to wait for a GM to post. The catch is that "AI text RPG" covers very different products. Some are pure story machines with no rules at all; some add dice, stats and a saved world. The section on AI below gives three tests to tell them apart in ten minutes.

What to look for before you commit an evening#

Whatever form you pick, these questions decide whether a text RPG holds up past the first session:

• Who decides outcomes? Code, dice or a human applying rules is good. If the narrator simply decides, every risk is fake and every victory is free.
• Does the world remember? After fifty turns, does the merchant still know your name, is the sword you bought still in your pack, are your hit points still the real number?
• How free is your input? Commands are precise but limiting; free text is expressive but only as good as the system that interprets it.
• Is it written in your language, or translated into it? Most MUDs and IF are in English. Translated prose reads stiffly; prose generated or written natively reads like a book.
• Solo, group, or both? Check whether you can play alone on a quiet night and invite friends later without starting over.
• What does it cost, and what is free? Look for a way to try it without a card, and read whether a free allowance is per day or in total.
• What is the pace? Real time, a few seconds per turn, or a day per post. Pick the one that matches your actual week, not your ideal one.

AI-run text RPGs: what changed, and three quick tests#

A language model writes good scenes. What it does not do by itself is keep accounts: it decides dice results inside the same text it narrates, and in long conversations numbers quietly drift. That is why a chatbot campaign often feels wonderful for twenty messages and loose by the fiftieth. What an AI Game Master is explains the mechanism in detail. For a quick verdict on any AI text RPG, run these three tests in your first ten minutes:

• The impossible-action test. Try something that should fail: lift the castle gate alone, talk a dragon out of its hoard in one sentence. A real game asks for a roll and lets you fail. A story machine says yes.
• The ledger test. Pick up an item, spend some gold, take a wound. Twenty turns later, check whether all three are still exactly right.
• The dice test. Ask where the number came from. If the narrator writes "you rolled a 17" in the same sentence as the outcome, the story chose the roll. If the roll exists before the narration, the rules are real.

None of this makes a pure story tool bad; if you want unbounded storytelling with no stakes, it is the right choice. But if you are looking for a role-playing game, the third ingredient has to live somewhere the narrator cannot reach. Is the AI Game Master fair? goes through how that can be checked, limits included.

How to start a text-based RPG tonight#

Pick the row that matches what you want, and you can be playing within half an hour:

• You want a big shared world: look up a MUD directory, choose a game that offers a web client and a newbie area, and spend your first session only on the tutorial and the help command. Ask in the newbie channel; MUD veterans are usually glad to see new players.
• You want a story with puzzles, alone: browse an interactive fiction archive or the entries of a yearly community competition, filter for games playable in the browser, and start with a short one.
• You want to write with real people: find a play-by-post board or a chat server with a recruitment channel, read a running game before you apply, and reply to a post that names its system, posting rhythm and tone.
• You want a Game Master right now, alone or with friends: try an AI-run game. Run the three tests above in the first session, and keep the character that survives them.

If you are coming from tabletop games and your group has fallen apart, playing a tabletop RPG solo compares pen-and-paper oracle play with an AI GM, and either one works as a text RPG.

Writing a good action in a text RPG

In every form except the command-based ones, the quality of the game depends partly on what you write. A good action says what your character wants, how they try it, and what they are willing to risk. Compare:

WEAK
I attack the guard.

STRONG
I wait until the guard turns toward the noise in the yard,
then step out of the doorway and try to knock him down
with the shield before he can shout. I want him on the
ground, not dead. If he does shout, I run for the stairs.

WHY THE SECOND ONE WORKS
- an intent (on the ground, not dead)
- a method the GM can judge (timing, shield, surprise)
- a fallback, so a failed roll still moves the story

Three to five sentences per turn is plenty. Longer is not better; clearer is. In a game with real dice, the stronger action also earns a fairer difficulty, because the GM can see exactly what you are doing to improve your odds.

Where Thavernia fits#

Thavernia, where this guide is published, is a text-based RPG in the browser in the AI-run category, built around the third ingredient. An AI Game Master narrates; the server keeps the rules. Concretely:

• You write in your own words. No command list. You describe what your character does and the Game Master replies in prose.
• Real dice, rolled before the narration. When an action is uncertain, the server rolls a d20 and a 3D die shows the result. The narrator receives a number that already exists and cannot change it.
• Tabletop rules. Ability scores, difficulty checks, hit points, levels and experience. Fights can be lost and characters can die.
• A world that is written down. Health, inventory, quests and the people you have met are recorded every turn, and the campaign is saved, so you can stop tonight and continue tomorrow.
• Six languages. The narration is generated directly in Turkish, English, German, Italian, French or Spanish, whichever the campaign uses.
• Solo or with friends. Play alone, or fill a table of up to six seats shared between human players and AI companions.
• Text first. Character portraits and scene illustrations exist, but the game is played in text, like every game on this page.

And what it is not. It is not a MUD: the adventure happens at your table, not on a crowded real-time server with hundreds of strangers. It is not a human Game Master either, and it will not read the quiet player's mood the way a friend across the table can. If those things matter most to you, the other rows of the table above are the better choice.

The quickest way to judge it is the same as for any AI text RPG: open the three-turn trial, try something that should fail, and see whether the dice let you.