Promptkoi

Low Poly Mountain Lake

Flux
By Varun Sharma Tested with Flux Flux.1 dev

Low Poly Mountain Lake is a tested Flux Flux.1 dev prompt for game design work. It runs at Flux Flux.1 dev · Aspect ratio 16:9 · Steps 28 · CFG scale 3.5, and ships below with the exact prompt text, usage notes, and 2 pasteable variations.

Last tested: July 2026 with Flux Flux.1 dev

Part of the Flux prompt library.

Low-poly mountain lake at sunset, faceted pine trees and jagged peaks mirrored in calm still water
Low Poly Mountain Lake — Flux Flux.1 dev, Aspect ratio 16:9

Prompt 

Low poly mountain lake at sunset, jagged angular peaks and sparse individual faceted pine trees mirrored in a calm glassy lake, peach-to-lavender gradient sky, low triangle count, clean stylized 3D render, serene game environment concept art

Settings

Model
Flux Flux.1 dev
Aspect ratio
16:9
Steps
28
CFG scale
3.5

How to use this prompt

The reflection is the whole shot: say "calm mirror-like lake reflecting the faceted mountains" explicitly, because Flux will otherwise give you flat blue water and waste the composition's best half. Keep the mountains "jagged, angular, low-poly" so their triangulated silhouette mirrors cleanly — rounded peaks blur the reflection. A sunset gradient sky, peach fading to lavender, does more for mood than any single color; let it tint the water too. If the pines merge into a green mass, add "sparse individual faceted pine trees" so each reads as its own geometric shape rather than a blurred treeline.

Variations to try

  • Aurora night — trade the sunset sky for a starfield with green aurora ribbons reflected in the dark lake
  • Autumn valley — recolour the pines to orange and red and add a faceted waterfall feeding the lake
low poly 3d render game design wallpaper

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For developers — copy this prompt as JSON 
{
  "title": "Low Poly Mountain Lake",
  "prompt": "Low poly mountain lake at sunset, jagged angular peaks and sparse individual faceted pine trees mirrored in a calm glassy lake, peach-to-lavender gradient sky, low triangle count, clean stylized 3D render, serene game environment concept art",
  "model": "Flux",
  "model_version": "Flux.1 dev",
  "settings": {
    "aspect_ratio": "16:9",
    "steps": 28,
    "cfg": 3.5
  },
  "style_tags": [
    "low-poly",
    "3d-render"
  ],
  "use_case_tags": [
    "game-design",
    "wallpaper"
  ],
  "source_url": "https://promptkoi.com/prompts/flux/low-poly-mountain-lake/"
}

The whole library is available as an open JSON dataset · developer docs.