A Genie 4 prompt is two texts, not one: the world seed you paste at the start, and the steering message you send mid-run. The five steps below build both. The free builder assembles them from dropdowns; this page explains what each choice is doing. For finished examples by job, see use cases.
Name a place with a shape to it: not “a village” but “a cliffside fishing village above a harbor”. Concrete settings give the model landmarks to keep consistent as you move. Add one signature detail — a lighthouse, a sleeping cat, a broken pier — that the world can be recognized by in every frame.
Weak: “a forest”. Strong: “a cathedral grove of giant redwoods with a fallen trunk bridge over a creek”.
Weather and light decide mood and visibility more than any other ingredient. Pick a specific time (“blue-hour dusk”, “foggy dawn”) and one weather behavior (“rolling fog banks”, “first snow flurries”). If the weather will change during the run, don't put the change here — that's the turning event's job, in step 4.
Weak: “nice day”. Strong: “golden hour, long shadows, light drizzle starting”.
Decide how the viewer moves: a slow forward walk, a gentle aerial rise, a side-tracking shot, an orbit around the central landmark. A planned path beats “look around” because the model composes frames along the route — doorways, waterlines and viewpoints land where the path can see them.
Weak: “explore the area”. Strong: “slow forward walk along the waterline, ending at the harbor steps”.
This is the step most prompts skip, and the one that matters most. Choose one change the world must react to — rain beginning, a character entering, the tide turning, lights switching on one street at a time — and give it a time: “at ~20 seconds”. Write it as its own line; in Genie 4 / Project Genie you send it as a steering message when the moment arrives, and the world simulates the consequences.
Weak: “something happens”. Strong: “at ~20s: rain begins and people pull awnings down”.
Genie 4 generates native audio, so the seed should say what the world sounds like: ambience of the place, two or three signature sounds, and whether there is music. “Waves, gulls and a distant bell, no music” beats “background sounds” every time. Dialogue, if any, goes in as a short quoted line with a named speaker.
Weak: “ambient audio”. Strong: “rain on canvas and wooden surfaces, a keeper calls out once: ‘Mind the step!’”
Put together, the five steps produce a prompt like this one:
World: a cliffside fishing village above a harbor, blue-hour dusk. Weather: rolling fog banks. Camera: slow forward walk along the waterline. Audio: waves, gulls and a distant bell, no music. Steering message (send at ~20s): fog rolls in and the far background disappears.
Two to four sentences of seed, one line of steering — that is the whole format. Paste the first part into Genie 4 as the opening description, send the second part at the stated time.
Genie 4 World Prompt Library — $9.99
300 ready-to-run world prompts across 12 themes — each with setting, weather, camera path, a timed turning event and an audio bed. Plus 50 turning-event sequences and a World Bible template for keeping recurring characters and locations consistent.
One-time payment. Not affiliated with Google or DeepMind.
Almost always a missing or vague turning event. A world seed alone produces a scene; the scheduled change — rain arriving, a character entering, lights switching on — is what makes it feel alive. Give the turning event a specific time and a visible consequence.
One planned event per 20-30 seconds of run is a good rhythm. More than that and the world never settles between changes; fewer and it drifts back to feeling like a video. You can always improvise extra steering live.
Build the library now. Prompts are plain text and cost nothing to prepare: write your world seeds and turning-event sequences, keep recurring places consistent with a World Bible, and you can run the whole collection the day access lands.
Independent tool, not affiliated with Google or DeepMind. Access status checked November 4, 2026.