How to make a 3D game when you build on your own Claude or ChatGPT plan

Ask anyone who opened a big engine, followed a tutorial, and never opened it again what happened, and you get one of two stories. Either they spent three weeks on character movement and never got to the game, or they got movement working and then stared at an empty grey plane with no idea how to make a world.

Both are real problems. Movement code is a solved problem that you should not be re-solving by hand. A world is not a solved problem — it is your game, and nobody can generate your taste for you. But most of a world is work rather than taste: sculpting the terrain, laying the river, planting the hillside. The taste is in a handful of calls, like where the path bends and what you see when you spawn.

So the code and the work of the world stop being your job, and the taste calls become it.

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First comes a brief. Flockbay asks what you are making, one round of questions at a time with a recommendation each, and writes down what gets built first, what comes after and what is not in this version. Nothing is built until you approve it. Then it builds the world with world tools: terrain sculpted and painted, water, sky, weather, plants, the player controller, characters and props, all as real nodes and resources in the Godot scene tree.

Terrain is real terrain rather than a heightmap you have to prepare somewhere else. Water follows an outline. Sky and weather are part of the world rather than a post-process you bolt on at the end. These exist because a 3D game that is worth walking around needs them early, not as a polish pass.

Objects come from a few places: a library of ready-made objects, generated on your own Tripo key, brought in from your own files, or built directly from Godot's own shapes when that is the honest way to get you playing. You will be told which happened.

The same world tools are buttons around the Godot editor's own 3D view: Sculpt, Paint, Plants, Place, Water, Sky, Weather. You never need them. When a call is pure taste, nudge the hill or move the tree yourself, and Godot's undo takes it back. A sentence gets you a valley; your hand can get you the exact valley.

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Flockbay writes GDScript inside your project. You describe behaviour in plain language — the door opens when you have the key, the enemy loses interest after ten seconds, falling in the water resets you to the shore — and the code appears in your project files.

Flockbay plays it first: it runs the game, sends input events, reads the debugger and captures the viewport, so a door that never opens is caught before you see it. You judge what is left by playing it. This is the part people expect to be a compromise and it is not: not writing the code does not mean not having standards about the game. You will reject things. That is the loop working.

Because the output is ordinary GDScript in an ordinary Godot project, nothing about it is locked to this tool. If you ever want to look, or hand it to someone who reads code, it is there.

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Flockbay is a desktop app for Windows and Linux with Godot bundled inside it. Press play and the game runs locally, using your GPU. Nothing streams and nothing renders in a data centre.

For 3D specifically this is the difference between a real scene and a toy one. Terrain, foliage, dynamic weather, and a population of characters is a normal local workload and an impossible browser workload, which is why browser tools nudge you toward small, flat, empty scenes without ever telling you why.

Building requires an internet connection, because the AI, asset generation and world data come over the network. Once built, the game plays without one.

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Not an open world. One valley, or one building, or one street. Something with a shape you can hold in your head and finish.

Get a character walking in it. Add one thing to find and one reason to look for it. Play it repeatedly and fix the things that annoy you — the camera, the walk speed, the fact that the interesting part is behind you when you spawn. That list of annoyances is your design document.

Scale comes after, and it comes cheaply, because the world tools do not get harder when the world gets bigger.

Terrain scale. It is very easy to build a valley that looks right from above and takes four minutes to walk across. Getting a feel for how large a space actually is when you are inside it, at walking speed, is the single most useful calibration you can do on day one.

Fog and haze. These control how far the player can see, and they are the strongest lever you have over the mood of an outdoor scene. They also hide the edge of your world, which is what stops a finite terrain from feeling like a diorama.

Time of day. A world at noon is flat and a world in late afternoon has shape, because long shadows describe the terrain. If a scene looks dull, the light is usually the reason before the geometry is.