Infinite Worlds is a browser-based AI text adventure where you type any action, get an illustrated story turn back, and can build or share your own worlds, paid for with credits.
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Infinite Worlds is an AI text adventure game that runs in the web browser: each turn you type what your character does, a large language model writes what happens next, and an image model illustrates the scene. Friendly Fox Games develops it and calls it "an AI-powered storytelling game". An independent news report from February 2024 covered the launch as the first game from Friendly Fox Games and described its creator as a solo developer.
Three facts shape most buying decisions. There is no subscription: play is paid for with credits, with a small daily allowance of free turns for registered accounts. The terms require players to be at least 18, and worlds flagged as mature or NSFW only become playable after an account-level opt-in. And the cost of a turn is not fixed, because it depends on the AI model you pick and how much text a world sends and receives.
For scale, a third-party traffic estimate put the site at about 1.7M monthly visits for April–August 2026, as captured on September 28, 2026. That is a modelled estimate from a directory, not a figure published by Friendly Fox Games.
Infinite Worlds doubles as an AI world builder. The home page calls world building its most distinctive feature: players can build their own adventures and share them with friends. A world generator model takes a short prompt and fills in the pieces needed to play, such as title, background, player characters, objectives and victory and defeat conditions, which the author can then edit before anyone plays.
Finished worlds can be published to a community list, and sharing is tied to a bonus-credit scheme (covered under Pricing). Starting a game effectively creates a copy of the chosen world, so later edits to the original do not affect games already in progress.
Storyteller Mode gives a player more control over a running game. It reveals hidden fields such as secret information and tracked items, and adds a second input box that gives the storyteller AI a strong instruction about what should happen in the next turn. It suits players who want to steer the plot rather than only act inside it.
For more mechanical worlds, authors can define tracked items (inventories, stats, relationships, quest state) and write PawScript. According to the official script guide, a script runs from the "Run a script" trigger effect and can only change the values of tracked items: it cannot show messages or talk to the AI, which keeps experiments contained. Each tracked item holds at most 10,000 characters, so long lists or logs get truncated beyond that point.
The storyteller is a selectable model with animal codenames. The community-maintained wiki lists which underlying model each codename uses, for example Smilodon (Claude Sonnet 4.5), Massivecat (Claude Opus 4.6), Leopard-2 (Gemini 3.1 Pro) and Grimalkin (GPT 4.1), as captured on September 28, 2026. The same wiki notes that per-turn costs shown in the model menu are only estimates, because provider token prices and turn lengths vary. In practice, the model you pick sets both the quality of the writing and how fast your credits go.
Illustrations use a separately chosen image model. The app recommends Manticore as the all-rounder ("If in doubt use this one!"), describes Wyvern as "especially good for anime" but inconsistent, and labels the older SD1.5 options as old models, advising "Use Manticore instead".
A typical first session looks like this:
The world lists are the main way into the product. The wiki describes a dedicated page for each game, separated into three categories, and community worlds can be filtered by favourites and by the Mature and NSFW checkboxes described under Limitations.
As an AI storytelling game, Infinite Worlds fits several distinct kinds of play:
Infinite Worlds grew out of a tabletop role-playing problem. In the February 2024 interview, the developer explained that he could generate and play storylines without needing other players, which is still the clearest fit.
Good fit:
Poor fit:
No public API or offline mode was found in the pages checked for this review.
Infinite Worlds sells credits rather than subscriptions. The terms say new users play free until their allocated free turns are consumed, after which "you must purchase credits".
| Credit pack | Listed price |
|---|---|
| 2,000 credits | $2.00 |
| 5,250 credits | $5.00 |
| 11,000 credits | $10.00 |
| 22,500 credits | $20.00 |
| 58,000 credits | $50.00 |
Prices come from the credit-purchase list in the web app, charged in USD, as captured on September 28, 2026. Larger packs include more credits per dollar.
What credits pay for. The app describes a credit as "roughly 0.1 cents worth of AI usage" and says the credits needed for a turn vary a lot with the complexity of the adventure. Only three things cost credits: taking a turn (priced by the chosen model), creating a world (50 credits) and making extra images (3.5 credits per image).
Free turns. Registered accounts get a few free turns each day, with the number depending on the AI model; they refresh around 8-9am GMT. The wiki's model table lists one to three free turns per model and states a maximum of 3 free turns a day in total. Some models are not available in free mode until credit is added.
No subscription, no refunds. According to the wiki, Friendly Fox has stated a clear "no" on a subscription model, citing AI costs; the background summarization that keeps long games coherent is subsidized and not billed to players. The terms state that all purchases are final and no refunds are provided.
Bonus credits. Sharing a world earns a cut of what referred players spend: 3% of all credits that player spends, plus 5% of spending on the shared world, or 10% if you created it. With 50,000 or more bonus credits, the Credits menu offers a cash-out at $50 per 50,000 credits, paid through PayPal.
Infinite Worlds is usually compared with other AI text adventure platforms rather than general chatbots:
The key difference is cost philosophy. In the 2024 interview, the developer contrasted his design with AI-dungeon-style games built for low cost, saying he wanted to see how far the other way could go by accepting some cost. That trade-off still shows: turns use premium models priced per use, not a flat plan.
Partly. New accounts start with free turns and registered players get a small number of free turns each day, but ongoing play requires buying credits. Packs start at 2,000 credits for $2.00.
Yes, for adult accounts that opt in. Worlds can be flagged Mature or NSFW, stay hidden unless you tick the matching filters, and only play after you confirm your account should allow mature content.
No. The terms state that all purchases are final and that no refunds will be provided.
You do. The terms grant players ownership of AI-generated text and illustrations and allow use outside the game, while giving the operator a licence to use submitted content to run and improve the service.
No app from the developer was found in the App Store searches for this review; the game is played in a web browser at infiniteworlds.app.
