gemini-prompts

name	gemini-prompts
description	This skill should be used when the user asks to "write a prompt for image generation", "design a generation prompt", "create a sprite prompt", "compose a Gemini prompt", "structure a prompt for game art", or otherwise needs to construct prompts for the gemini-creative-plugin. Covers the Identity Guide 5-line pattern, isolation suffix template for asset extraction, narrative-vs-keyword rules, and Do/Avoid prompting rules. Domain-specific prompt structures (sprites, environments, UI, icons, web) live in references/domain-structures.md. Use when this capability is needed.
metadata	{"author":"2901were"}

Gemini Prompting Guide

Write effective prompts for Gemini image generation. The core principle from Google: describe the scene narratively, don't just list keywords.

Universal Prompt Structure

[Subject] + [Composition] + [Action/State] + [Location/Context] + [Style] + [Technical specs]

Bad: knight pixel art game Good: 2D pixel art knight character in idle stance, front-facing, blue tabard with gold lion emblem, silver plate armor, white background, 16x16 pixel grid, game sprite sheet style

For per-domain prompt structures (sprites, environments, characters, UI, icons, web sections), see references/domain-structures.md.

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The Identity Guide Pattern (validated 2026-05-12)

For series work — sprite sets, evolution-chain atlases, mockup screens, item packs — pin a byte-identical identity guide block at the top of every call in the series. The variant prompt then describes only what differs.

Five-line structure:

Identity: [IP name, what the world is, who plays]
Form: [3D/2D, geometry style, surface character, proportions]
Camera: [angle, lens, key/fill lighting setup]
Palette: [Name #HEX, Name #HEX, ...]
Materials: [textures, finishes, special-state effects]