Easy Prompt
Image GenerationImageAdvanced

Game Asset - Chibi RPG Game Campaign Key Visual

Designed for mobile RPG event announcements, this prompt creates cheerful fantasy illustrations featuring adorable chibi characters and magical treasure chests.

Prompt Content

Copy and paste directly into your model or internal evaluation tool.

[Game Campaign]

  • Game Title: {argument name="game title" default="Treasure Hunt!"}
  • Game Overview/Features: {argument name="description" default="Find treasures on a great adventure island!"}
  • Genre/Subtext: {argument name="subtext" default="RPG Adventure Action!"}

[Quality, Production, Composition]

  • Style: Illustration for event announcements for Japanese mobile RPGs or casual games. A colorful and joyful fantasy world.
  • Subject: Adorable chibi characters (deformed heroes or mascots) opening a treasure chest with smiles. Golden light and magical particles are overflowing dazzlingly from the chest.
  • Background: Blue sky, white clouds, and islands or forests in a lush fantasy world.
  • Typography (for GPT-image / Nano Banana Pro): A fantasy-style decorative logotype of {argument name="game title" default="Treasure Hunt!"} is designed in the center or top of the screen, with {argument name="description" default="Find treasures on a great adventure island!"} and {argument name="subtext" default="RPG Adventure Action!"} added in an easy-to-read layout.
  • Color/Lighting: Bright, high-saturation fantasy colors, magical gloss, and soft shadow depiction.

[Strict Layout and Output Constraints (Required)]

  • Output the finished design itself, filling the entire screen. Backgrounds and scene descriptions (walls, spaces, shadows, etc.) within the design may follow the instructions in the main text.

  • Prohibitions: Photos of the finished poster in a frame, photos pinned to a wall, mockup photos placed on a desk or paper, perspective distortion of paper edges, or drop shadows.

  • Output the finished flat 2D design itself, filling the entire canvas. Scene elements inside the design (walls, rooms, shadows) described above are allowed. Absolutely NO photo-of-a-poster mockups: no picture frames, no poster-on-wall or poster-on-desk shots, no perspective warp or drop shadow around the artwork's edges.

  • Aspect Ratio: --ar 16:9

Use Cases

Nano Banana Pro image generationReusable creative visual briefsImage model evaluation

Example outputs

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Reference Output

Gallery: https://youmind.com/en-US/nano-banana-pro-prompts?id=34306 Author: AI Guide-Note - 実務で使えるAI活用メディア Original source: Twitter Post

Scoring Rubric

Check whether the image follows the subject, composition, style, aspect ratio, text, and negative constraints; prioritize the visual details explicitly listed in the prompt.

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