AI Concept Art for an Indie Game: One Week from Mood to Key Art

A small game rarely dies of a shortage of ideas on Monday. It dies around week three, when the ideas live in a few heads, or in one head on four different days, and no two of them look alike. Concept art is what puts them on a single page. This is a preproduction week as I would run it with an image generator in the loop: what to ask for each day, what to keep, and the part where it is simply the wrong tool.

Monday: moods before maps

Do not start with the hero. Start with a feeling, one per prompt: “abandoned lighthouse after a storm, cold green light, the sense of being late”. Make a dozen cheap drafts and do not polish any of them. You are looking for the three that make you say “yes, that is the game”. Put them side by side and write down what they share: the palette, the kind of light, how much empty space. That sentence is your style line. Paste it unchanged into every later prompt and change only the subject; keeping a prompt library shows where to store it, and drafting first explains why the early rounds belong in the cheap settings.

Tuesday: environments at the shape of your screen

Choose the frame before the place. Fellowi Images has a picker with 16:9 for a typical screen, 21:9 for a cinematic strip and tall shapes for a phone game; the aspect ratio guide has the whole list. Then ask for one place per prompt and say what the player does there: a rope bridge to cross, a market street with three exits. Generators love a centred landmark, so ask for a quiet foreground and a path that leads the eye. Render the same place at dawn and at night to see how far the light can go. What comes back is a painting to argue with, not a level layout: it ignores your gameplay space, and the bridge it draws may lead nowhere.

Wednesday: a character who keeps his look

Describe the silhouette first, a tall hooded figure or a round heavy one with a lantern, then the materials, then one detail that tells a story, such as a mended glove. When one version is right, attach it as a reference image and ask for the same character in a new pose or a new place. The reference images guide explains how that works. It holds the overall look, not every stitch, and the cheapest image family takes no references, so pick another one for this step. If the reference is a photo of a real person, you need that person’s permission.

Thursday: key art, as ten rough ideas

Key art is the picture on the store page, with a logo and a tagline laid over it. So generate thumbnails with that in mind: a poster shape, a banner shape, and a large calm area where the logo will sit. Keep lettering out of the prompt, because words inside a generated image come out misspelled or warped; the title goes in your editor. Ten rough compositions in an hour is realistic. Pick one and treat it as a brief for whoever paints the final, which may be you. If you want to feel a trailer mood early, the same still can be animated in Fellowi Video.

Friday: what you are allowed to do with it

The facts in our terms are short. We place no restriction on commercial use, take no share and need no credit. There is no exclusivity: someone with a similar prompt may get a similar picture, which matters when the picture is your game’s identity. There is no warranty that you own a copyright in the output, and in several countries purely machine-made work may not qualify for one; who owns AI images and commercial use of AI imagesgo through it. Using someone’s likeness or a trademark is on you, and files are deleted after a retention period (see the product page), so download what the project needs into its own folder. My rule from that: concept art is direction, and the picture that makes the game recognisable should have a human author.

Where it fails

The studio gives you one flat picture per generation, as a PNG or JPEG file. It has no setting for a transparent background, for seamless tiling or for a sprite sheet, and nothing exports to an engine format. Writing “on a transparent background” in a prompt gets you a character on some background. So there are no sprite sheets with matching frames, no tileable textures, no clean cut-outs and no engine-ready assets. It also does not know your game: the readability of a character at thumbnail size, the width of a corridor, the camera. Shrink every concept to the size it will have on screen before you fall for it. Concept art ends where production art begins, so the day you need frames or tiles, open your pixel tool or hire an artist, and hand over Monday’s style line and Thursday’s pick as the brief. For a table rather than a studio, see AI art for tabletop campaigns.