Hold the door to cast the spell
A calm game in the making
A lonely wizard turns old doors into portals. Each run crosses five generated worlds and gathers one stranger's story, a golden fragment at a time.
Echo In a cabin of the fishing camp, an old radio crackles back to life.
Door Green plank door of a tool shed
Who
Love
The turn
ResolutionThe game
Before each run, a short human story is written and split into five golden fragments: who a person was, what they loved, what turned, what it meant, and how it ends. In every world, three glowing clues lead to one fragment. The last one waits at a calm spot: a bench at sunset, tea on a rock with someone you helped.
The fifth door leads home. There the fragments fly to the cork board, a Polaroid develops in your hand, and the whole story is told. About an hour, from home to home.
No enemies, no timer, no fail state. Energy rises only to settle into rest.
Sitting, watching and listening make the world show its clues. Stillness is the hint system.
Every run tells one complete tale about a stranger, kept as one Polaroid.
Low poly, never crude. Things move in every view, and small ones can be pushed, picked up and thrown.
One door per world leads on. The next world shows through it, with no fade between.
Calm colours. Halos and the door's glow are the brightest things in view.
One world, step by step
Every world follows the same arc, from a little adrenaline to a long exhale, in 10 to 15 minutes. Here is how it could go in winter market.
1Arrive
The portal lands in a lane of log houses on market night. A lantern lies by a heap of snow, in a soft white halo: the first clue, in view of the door.
2Discover
From the slope the whole village shows: the stalls in the square, smoke from every chimney, the fir woods round the valley. Nothing here can be missed or lost.
3Energize
A villager's sledge has spilled its firewood in the lane. Carry the logs back to the woodpile before the bell rings. The event waits for you and cannot be failed.
4Rest
At the top of the village, by the tall house and the snowy firs, sit on the fence and watch the lanterns below. The halo turns gold, and the golden fragment of the tale is yours.
5Depart
The back door of a woodshed, a star carved in it, glows along its frame. Cast the spell, and the next world shows through it.
Only the calm moment awards a fragment. Side life is never counted and never blocks a clue, and nothing in a world can be lost or expire.
The spell
The wizard casts with bare hands. Each world has exactly one enchantable door. It belongs in the place, stands closed and locked, and glows along its frame only when you come close.
A local clue. Soft, with a slow pulse; brighter while you stand still.
The golden fragment at the calm spot, with drifting motes.
The enchantable door, along its frame, up close only.
| Searching | Moving, revisiting, inspecting without finding the next clue | Hint timer runs |
|---|---|---|
| Resting | Sitting, watching, listening, enjoying side life | Hint timer paused |
After a while of searching, the next halo shows through walls. Later, a trail of fireflies or drifting petals lights a path to it. Both are easy to ignore.
Worlds
A world is a setting: a beach, a frontier town, a neon street, a mine. A run picks five, in the order that serves its tale, and sets each one's layout, time of day, weather and people, so the same place never looks the same twice. The catalogue holds 17 hand-written settings.
A long lake among birch woods at the end of the season. The fishing camp on its north shore is packing up: boats come out of the water, nets hang to dry for the last time, shutters go up on the cabins.
A city of narrow alleys, bridges and canals on the last night of carnival. Everyone wears a mask.
Tonight the lord of the castle holds a great feast, and everything under the hall is working at once. The kitchens roar with ovens and spits.
A round sinkhole opens in the jungle floor, and under its rim lies a temple cut into the rock on three levels. Tree roots hang through the ceilings down to the water.
A cave system of two or three levels around a still black lake. Giant pale crystals grow from the walls of the upper caverns, and the ceiling over the lake is full of glowworms.
A wide heather moor under a fading sky, cut by dark pinewoods and a bog. Tonight, as every year at dusk, the villagers carry lanterns across the heath along a line of cairns to a ring of standing stones.
A misty fen with a village on stilts, where the water rises a little higher each night.
A dusty town of one main street, a rail depot and scattered corrals. The payroll for the mine comes in by stagecoach at noon and goes into the bank.
A sunken basin where mushrooms grow taller than houses and glow from the gills as the light goes. It is twilight, the hour when the caps start to shine and release their spores.
A mine cut into a dry hillside a hundred years ago and never quite given up. At the mouth, a stamp mill thumps under a tin roof and a tipple loads ore into a waiting cart.
Rolling green hills at noon with sheep, dry-stone walls and a shepherd whose flock has wandered.
A cluster of domes linked by glass tube walkways on a plain of rust-red rock. A dust storm has closed in: outside the glass the sky is a moving brown wall, and the sun is a pale disc.
Under a mountain monastery run the catacombs: ossuaries, a cistern, monks' cells and a library of chained books that no one may read. The monks copy, sweep and pray on a fixed round.
A night market packed under an elevated rail line: noodle bars, repair stalls, stacked apartments and neon in every colour. It rains without a pause.
A caravan camped at a desert oasis on the edge of white salt flats, waiting for a guide who has not come back.
A steep slope cut into narrow tea terraces, stepping down from a pine ridge to a river gorge. It is early morning in the first picking week.
A village of steep-roofed timber houses in a high snowy valley, on the one night of the year when the whole valley comes for the winter market. Stalls fill the square, a brass band plays by the bell tower, and people skate on the frozen pond under strings of lanterns.
Every picture is a screenshot of the test build: one instance of the world, as the game draws it today.
Home
Every run starts and ends at the wizard's home. At the end, the fragments fly to the cork board, and the Polaroid of the run develops slowly in his hand while the story is told in full.
The sample tale of this page. In the game the Polaroid is painted for its story.
How it is built
The world is not a static mesh. A pipeline turns seeds into terrain, settles it with wildlife and houses, checks that it is solvable, and streams cells to the player view in real time.
Settings, story bible, 5 world plans
Hills, rivers, roads, herds, houses
3 clues, line of sight, reachability
Shared simulation, binary cells
Low-poly render, made shapes
Godot 4 draws each world from what the server sends: ground elevation, props, lighting, water and animated creatures. Available on Windows, macOS and Linux desktop with keyboard and mouse. The VR rig for Quest 3 over WiVRn already exists and returns in phase V.
A TypeScript backend on Bun lays out each world deterministically from a 32-bit seed: contour hills, stream hydrology, farm tracks, fences, villages and wandering herds. It streams cells from one shared cache and synchronizes wildlife so all players see the same movements.
AI never runs unconstrained. Narrative planning happens before arrival; real-time pacing responds to player stillness. Both fail over cleanly to deterministic fallbacks.
Opus writes world settings and the five-world run bible before the player reaches them. Each prompt has a strict schema and hard timeout. If generation fails twice, the game loads a hand-checked setting.
Jev makes fast typed decisions during the run. It watches player stillness, walking speed and proximity to pick the next event, choose its variant, and wait until the player settles into rest.
Before the player steps through a portal, deterministic validation checks the generated plan against the actual terrain mesh. A plan must satisfy four geometric invariants:
No meshes or textures are downloaded from asset stores. Every prop, plant and creature is a small JSON recipe in client/made/, built at runtime in the world's palette. Bones allow trees to sway in wind and animals to turn their heads.
{
"builtin": "birch",
"slots": ["crown", "bark", "bark mark"],
"motion": "sway-tree"
}Items without a recipe render as a clean grey placeholder box until crafted.
In the test build
The full run, the story fragments and the portal spell are being built. The test build is the playable multiplayer layer that works today: 17 worlds, from green hills and a dusk moor to a frontier town, a neon market and the cellars under a castle. Pick a world instance, step in, and explore it with other testers on desktop.
Open for roamingSunlit rolling pastures, dry stone walls, walking sheep flocks, windpumps, footbridges, and a shepherd's cottage with open doors.
Open for roamingA snowbound mountain village on market night: log houses, smoke from every chimney, lanterns on the snow, a chapel on the hill, and villagers carrying their lights through the lanes.
Straightforward desktop inputs for roaming, interacting with life, and finding fellow testers.
Pet sheep and dogs to watch them wag. Greet wandering shepherds to receive a wave or bow. Toggle cottage doors open or closed.
Project vertical light beams to the sky above every fellow tester in the current world instance.
Raise beacon columns over the arrival point, the world's portal door, and major landscape landmarks.
Walk the worlds, climb hills, follow paths and streets, and cross streams. Trunks, walls and fences stop you.
Check the corner map for terrain contours, watercourses, roads, structures, and moving herd locations.
Inspect active testers in your instance, view avatar names, and check server connection status.
What you can test in the desktop build today, and what is currently in development.
| Feature | Status | Details |
|---|---|---|
| Multiplayer roaming | Live now | Explore shared world instances with other testers; random avatars and names. |
| Procedural cell streaming | Live now | Binary chunk streaming around player view from shared Bun server cache. |
| Living wildlife and villagers | Live now | Synchronized animal herds, wandering shepherds, and interactive petting and greetings. |
| Dusk lighting and hearth fires | Live now | Flickering lanterns, moving shadows, and warm hearth fires in cottages. |
| Opus story and clue sequence | In development | AI-authored five-stage run narratives, three clue trails, and golden fragments. |
| Portal spell casting ritual | In development | Rune charging ritual, door opening, and seamless world transition. |
| Quest 3 VR streaming | In development | WiVRn client integration returning in Phase V after desktop validation. |
Download the test build for Windows, macOS or Linux and join an instance.
Play the test build
The desktop game for Windows, macOS and Linux. The worlds stream from our server, so the game asks once for a tester's key.
DownloadHow to install, past the Windows and macOS warnings. The files are listed by version.
Run the setup on Windows: at "Windows protected your PC", click More info, then Run anyway. On a Mac, unzip and open GateCaster; the first time, allow it under System Settings, Privacy & Security, Open Anyway. On Linux, make the AppImage executable and run it. Step by step.
The game asks once for a tester's key and keeps it.
Choose an instance and walk in. Other testers may be there already.
Blog
One short story for each day. What I tried, what went wrong, what I hoped for. Written for the people who are testing the game.
A frame rate measured at last, a crash survived, spells that can be pushed too far, and a name for the wild half of the game.
I stopped doing one task at a time and handed the whole list to a swarm. By two in the morning the game had spells, a chat, a spellbook and a dozen new worlds.
Almost no code. A list of what every game has, and nine wishes typed after midnight.