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How To Make a Game Trailer with AI (Full Workflow + Prompts)

2026-08-10 · blog how-to · Higgsfield · original

Topic: Assets, references & consistency (also: Pre-production & story, Cost, credits & plans, Higgsfield platform & ecosystem, Video generation & shot direction, Post-production & finishing) · mode: Tutorial · tags: prompts shared, vendor claims, time-bound offer, flattened table

This Higgsfield blog guide builds a one-minute cinematic trailer for LETA, a fictional detective game, and shares the full workflow and prompts. The method is to plan the story, lock character and location references, write the whole shot list with cuts, dialogue and sound, generate in passes, then finish the cut. A face stays the same through a reference sheet attached to every shot, while outfit changes go in the prompt; since Seedance ignores negative prompts, describe the state you want instead. The trailer cost about 391 credits, roughly $20, nearly all of it on the two 30-second video generations.

What is said

  • Questions and answers: tools, consistency, cost, time, ad variants, negative prompts

What is said

★ — how much it matters to the source.

  • ★★★ Higgsfield's guide says a game trailer made with AI needs three things: locked character and location references, a shot-by-shot script, and a video model that animates those references consistently.
  • ★★★ Higgsfield's method for a game trailer in one line: plan the story, lock character references, lock locations, write the full shot list, generate the trailer in passes, then finish the cut.
  • ★★ Higgsfield builds a cinematic game trailer, carried by character, world and atmosphere, as the format an asset-first AI workflow suits best; for a gameplay trailer the same locked-reference workflow holds with a shot list of mechanics.
  • ★★ Before generating a game trailer, Higgsfield advises writing a description of each character detailed enough that someone else could picture them from the text alone, which it says keeps the face consistent later. · character sheet
  • ★★★ Higgsfield's rule for character references: identity changes such as age get their own reference, while a change of clothes is written into the scene prompt; Leta wears a different outfit in every scene of the LETA trailer with no extra asset. · character sheet
  • ★★★ To keep a face the same, Higgsfield advises locking it as a reference sheet before generating any scene, attaching that file to every shot the character is in, keeping the attachment order identical, and repeating the physical details in the prompt as a backup. · character sheet
  • ★★ Higgsfield prompts read references by upload position: the first attached image becomes @image_1, the second @image_2; the two halves of the LETA trailer use different upload orders, so each lists its own sequence.
  • ★★ In the LETA trailer the locations were not attached as references: each was written out in words inside every scene prompt, with the locked location images used as the visual target while writing those descriptions. · location reference sheet
  • ★★ Smaller settings that appear in a single beat of the LETA trailer (the bedroom, the family dining table, the doorway) were written straight into their scene prompts instead of being generated as separate assets.
  • ★★ The one-minute LETA trailer runs on 3 designed characters and 7 locations, reused across every shot instead of regenerated per scene.
  • ★★ The three main characters of the LETA trailer, generated in Soul Cinema, expand into eight reference files: age variants of the same faces across two decades and one shared card for Leta's parents. · Soul Cinema
  • ★★★ Higgsfield advises writing the full trailer as a shot list, with cuts, dialogue and sound, before generating a single frame, then generating against that list.
  • ★★ Higgsfield says most trailers, whatever the story, break into a similar four-part arc: the hook, the rise, the turn and the climax.
  • ★★ In Higgsfield's four-part trailer arc, the climax ends unresolved rather than tidy, followed by the title card.
  • ★★ The LETA trailer was planned on paper as 4 acts across two 30-second generations, about a minute in total.
  • ★★ Higgsfield says Cinema Studio gives deterministic camera control: a virtual camera body, lens and focal length, set moves such as a dolly, crane rise or crash zoom, and several camera moves stacked in one shot. · Cinema Studio
  • ★★ For a game trailer on Higgsfield, the guide uses Soul Cinema for the still character and location references and Seedance 2.5 at 720p for every video shot, all inside Cinema Studio. · Soul Cinema, Seedance 2.5, Cinema Studio
  • ★★★ Both LETA video prompts ask for a deliberately rendered look, near-photoreal with real-time-engine tells (subsurface sheen on skin, strand-clumped hair, computed bokeh, even grain), because a game trailer has to read as belonging to a game; the references stay photographic.
  • ★★★ The one-minute LETA trailer cost about 391 credits, roughly $20 at about 20 credits per dollar; over 99% went to the two 30-second video generations, and all still references together cost under 2 credits. · credit
  • ★★ Seedance 2.5 video at 720p costs 195 credits per 30-second generation on Higgsfield; video pricing scales with length, so cost depends almost entirely on the runtime generated. · Seedance 2.5, credit
  • ★★ Higgsfield advises regenerating any beat of a pass that missed: a retry costs the same 195 credits, so a failed beat is cheaper to fix at the prompt level than to accept.
  • ★★ To finish the LETA trailer, the two 30-second passes are joined on the hard cut between them, the clinic grade is checked across the seam, the two dialogue lines and the monitor beep are confirmed, then the cut is exported.
  • ★★ Higgsfield says a 30-second video pass generates in minutes, so the real time of a trailer goes to writing the shot list, reviewing each pass and regenerating missed beats; count one pass plus retries per half.
  • ★★★ Higgsfield says Seedance does not process negative prompts: writing "she doesn't smile" tends to produce the opposite, so describe the state wanted instead. · Seedance
  • ★★ Higgsfield advises moving a trailer's locked characters and locations directly into Marketing Studio to batch ad creatives with no rebuilding, so every version reads as the same game. · Marketing Studio
  • ★★ Higgsfield's guide says the Higgsfield Global Film Festival runs August 7 to 31, 2026, with a $1,000,000 prize pool for films of 3 minutes or longer generated entirely on Higgsfield. · Higgsfield Global Film Festival · first in: 2026-08-04, Changelog: Higgsfield Global Film Festival
  • ★ Higgsfield points readers who want to go deeper to Higgsfield Academy, whose AI Filmmaking Pipeline course teaches the same method on a football drama. · Higgsfield Academy

Threads in this video

Mentioned

Central: character sheet · Cinema Studio · LETA · Seedance 2.5 · Soul Cinema

Also: Projects: Higgsfield Academy · Higgsfield Global Film Festival

Concepts: credit · location reference sheet

Characters: Damen Voss · Kai Weil · Leta Moren

Products: Marketing Studio · Seedance

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