The Tool — what £22.49 gets you
One purchase. Everything included.
Say how it should feel — out loud, typed, or picked — and walk the complete world that forms around what you love. £22.49, once. No tiers, no subscription, nothing behind a paywall. Walking, editing, re-skinning and exporting what you have made is free and unlimited, forever.
Say how it should feel. Walk the world that forms around it.
You say how it should feel and what belongs at the heart of it. Thalyn resolves everything else — terrain, biomes, water, erosion, paths, assets, atmosphere, and light — into one coherent, walkable 3D world you stand in first person. You own the output. It is yours to keep.
No modelling. No scripting. No hunting for assets. Place what matters — a landmark, a focal point, your own imported model — and the world arranges itself around it. Change its entire look with a single pick. Walk it again. Send it to Roblox.
Build a world around a model you already had, and the first thing you'll want to do is show someone.
You bring the castle. Thalyn builds the kingdom.
Drop in your own model — a castle, a cottage, a ruin, a creature — and Thalyn treats it as the reason the world exists. Terrain, sightlines and paths arrange themselves so it sits where it should and stays reachable on foot. Combine several models into a single landmark and the world still resolves around the whole. The day-one library has buildings, landmarks and hundreds of trees, shrubs, rocks and flowers if you'd rather start from what's there.
Your castle was never the problem. The nowhere around it was.
Change your world's entire look in a single pick.
Walk your finished world in first person, open the style selector, and choose. Every surface, texture, and object transforms at once — not a colour filter, the whole world. It happens live, in real time, while you are standing in it. Every copy has it from day one.
You'll do it once to see if it's real. You'll keep doing it because the eerie version of your serene valley was, somehow, always there.
Say it out loud.
Answer the creation ritual in your own voice — "serene," "surprise me" — and the world takes you at your word. Typing and picking from a menu do exactly the same thing, so use whichever suits the moment.
Stand in it properly.
Your worlds open in PC VR through OpenXR, tested on Meta Quest 3. Scale is the whole point: a valley you shaped on a monitor reads completely differently when you are standing at the bottom of it, looking up. Everything the desktop does stays exactly where it is — VR is another way in, not a separate edition.
Complete terrain generation
Terrain with real shape and real logic: rivers that carve their own valleys and flow the way water actually flows; roads and footpaths that link the places that matter, with bridges where they must cross; biomes that meet at natural boundaries; and sightlines composed on purpose, so the world keeps offering you somewhere to look and somewhere to shelter.
Focal points
Mark a spot that matters — a landmark, an area of importance, your own imported model — and the world resolves around it, so your chosen point stays central and stays reachable on foot.
Full atmosphere
Sky, fog, time of day, and ambient mood — all driven by the feeling you chose, never a list of unrelated presets stitched on afterward.
Generation history
Every world you make is saved with its emotion and settings. Return to anything you have ever created, or grow a fresh variation from the same starting point.
Repeatable worlds
The same choices rebuild the same world. Share your choices and anyone can grow the very same world for themselves.
Roblox export
Send any world to Roblox as a complete, playable scene — terrain, assets, lighting, and atmosphere included. Export is part of the tool and free; it costs you nothing.
Included library of looks
A curated library of visual looks comes with every copy, with more to discover as you create. Others are exclusive looks that can only be earned, never bought — found inside ThalynQuest, and collected no other way.
A world only you have walked is just a place. Export is how it becomes somewhere.
Choose the feeling. The whole world follows.
Serene
Open, gentle, unhurried. Spaces that invite you to rest.
Joyful
Bright, abundant, generous. Worlds that feel alive and welcoming.
Oppressive
Weight and enclosure. A world that closes around you.
Desolate
Emptied. The feeling of something that was, and is no longer.
Eerie
Wrongness at the edge of perception. The unseen that shouldn't be there.
Chaotic
Overwhelm as terrain. A world that refuses to resolve.
A world that reads like somewhere you've been — not something you assembled.
Deterministic, not generative.
Your world is built by a rules-based generation engine grounded in ecological and psychological research. Nothing is painted, guessed or rolled: the same seed rebuilds the same world, exactly — the same ridge, the same river, the same light through the same trees.
Share a seed and someone else stands where you stood, not in an approximation of it. Nothing you build is at the mercy of a model version.
Come back in six months. It's still there. Exactly.
Awen — the current that runs through Thalyn.
Awen is the old word for the breath of poetic inspiration — the song worlds are born from.
World generation draws Awen, Thalyn's creative energy. It refills every day, it can be earned by sharing worlds, and it is never sold. Walking, editing, re-skinning and exporting your worlds are all free and unlimited, forever.
A treasure hunt woven into your worlds.
ThalynQuest is a free, optional treasure hunt threaded through Thalyn. Read the riddles, shape the worlds they describe, and find the relics hidden inside your creations. Claim them to earn rewards money can never buy.
Those rewards include new powers — floating sky-island worlds, blending more than one emotion into a single world, and custom audio environments — alongside exclusive looks that can only be earned, never bought — only walked for.
The toolkit is complete with or without it. It's a gift, not a gate.
Building sky-island worlds is a quest reward. Walking through a sky world someone else made is always free.One email when Thalyn launches on Steam. Nothing else — no list, no newsletter, no spam.
We store your address for this one purpose and delete it on request. See Legal.From ancient song, all worlds are born. Yours is next.
Your models have been waiting in a folder. Be there the day they get somewhere to stand.
Available on Steam · PC · £22.49 · one-time · Early Access
World generation needs an internet connection and your Thalyn account, which comes included with your copy. Ages 13+.
