Cozy farm sim icons are one of the easiest asset packs to sell. Watering cans, seed crates, flower pots, jam jars — there is a permanent market for them and they are pleasant to make.

Here is the prompt. The interesting line is the second one.

Flat 2D vector game icon of a pale mint green watering can with chipped enamel on the
spout, on a plain white background.

Palette: soft mint green, honey brown and warm terracotta, gently desaturated.

Isometric view - the top, front and one side face all visible. Bold dark outline. Flat cel
shading with three values: top face lightest, front mid, side darkest. No gradients, no
gloss, no texture.

No shadow of any kind. Object fills the frame with a small even margin. Nothing else in
the image.

Swap the item, keep everything else, and the next icon belongs to the same world as the last one.

Name The Palette, Not The Game

The temptation is to write “in the style of [famous farming game]” and let the model do the rest. Do not do that, for two reasons.

The first is practical. Naming a game hands over the entire look as one lump, so when you want it slightly warmer or slightly less saturated you have no dial to turn. Naming three colors and a saturation level gives you a dial for each one.

The second is that you are presumably making these to sell. Building a commercial asset pack on top of a named, living, actively-lawyered property is a bad foundation, even when the output looks nothing like the original. Describe the palette and you own the result outright.

Three colors is the sweet spot. Two feels thin, five stops being a palette and starts being a suggestion.

Take It

Flat 2D vector game icon of [ITEM - what it is, its color, and one detail], on a plain
white background.

Palette: [THREE COLORS that define your world, plus how saturated they are].

Isometric view - the top, front and one side face all visible. Bold dark outline. Flat cel
shading with three values: top face lightest, front mid, side darkest. No gradients, no
gloss, no texture.

No shadow of any kind. Object fills the frame with a small even margin. Nothing else in
the image.

The item line still wants what it is, its color, and one specific piece of wear. “A watering can” gives you a watering can. “A pale mint green watering can with chipped enamel on the spout” gives you something that looks like it has been used to water something.

Palette Recipes For Other Worlds

Cozy farm: soft mint green, honey brown and warm terracotta, gently desaturated.

Prepper and survival: olive drab, oxide red and gunmetal grey, muted and dusty.

Fantasy loot: deep plum, aged gold and cold steel blue, rich and saturated.

Sci-fi: off-white polymer, signal cyan and charcoal, clean and high contrast.

Same six lines underneath every one of them. Four completely different products out of one block of text, which is a decent return on a paragraph.

Two Things Worth Knowing First

The white background is a cutout, not transparency. You still key it out afterward if you need a PNG with an alpha channel.

And models vary a lot on that white background specifically, which caught me out. Nano Banana gives a genuinely clean white every time. Ideogram v2 kept handing me a faint cyan or cream wash instead — and it held onto that tint even after I spelled out pure white with a hex code and told it four different ways not to tint the background. If your backgrounds are coming back faintly colored, that is the model, not your prompt, so try a different one rather than adding more words.

Go Make A Pack

Pick three colors, write six item lines, run it six times. Then do it again with a different palette and you have a second pack by lunch.

The three-step activity page prompt is the closest cousin to this one, and the specific little things covers why the small prompt details matter so much.