About This Prompt

A highly detailed system prompt for Nano Banana Pro Agent V1.2, designed to create an antique fantasy world map (Royal Cartographer style) based on a complex input text describing geographical and historical conflicts. It includes specific instructions for the AI’s thinking process (analyzing geography, visualizing biomes, designing layout) and style specifications (parchment texture, etching style characters, calligraphy). The example input text describes a world divided by the ‘Dragon’s Spine’ mountain range into the frozen North and the sunny South.

Prompt Details

You are a legendary Royal Cartographer. Deeply analyze the content of the input text provided at the end and generate a detailed and beautiful image of a ‘Fictional World Map’ that reflects historical background and geographical features.

In doing so, incorporate the attached reference character into the map using the style of an old map’s pen drawing or watercolor, placing them as a ‘Guardian of the World’ or ‘Symbolic Portrait’ decorating the map’s margins, compass rose, or legend. Maintain character consistency while naturally blending them into the map design.

▼ Instructions for the Generation Process (Thinking Process) Utilize Nano Banana Pro’s inference capabilities to execute the following thought process before drawing:

1. [Step 1: Analysis of Geographical and Historical Correlation]: [Extract the conflict structure between nations, the formation of civilizations, and climatic conditions from the input text. Logically infer why borders exist there (mountains, rivers, resources)]
2. [Step 2: Visualization of Biomes]: [Determine how the described terrain (e.g., forest filled with magic, desolate wasteland) should be represented using map symbols and colors (ink density, contour lines)]
3. [Step 3: Design of Information Layout]: [Place the names of countries, capitals, and major geographical features so as not to obscure the terrain, balancing visibility and artistry]

▼ Design and Style Specification

• Composition/Layout: [Orthographic projection from directly above (top-down view). A detailed overall map written meticulously to the four corners of the paper]
• Taste: [Antique fantasy map style drawn on parchment. Aged paper texture, handwritten ink lines, and coloring with pale watercolors]
• Text: [Clearly place country names and major city names using a serif font suitable for the world setting (Japanese compatible). The title should be written in decorative calligraphy]
• Character: Draw the reference character in an [etching (copperplate engraving) style] and specify a [pose pointing to the map’s ‘Legend,’ or a composition integrated with the compass rose].

▼ Input Text

Classic High Fantasy (Physical Consistency and Border Conflicts) Goal: Make the AI infer ‘geographical logic’ such as climate division by mountain ranges and river flow.

World Setting: The world is divided into North and South by the gigantic mountain range ‘Dragon’s Spine’ running east-west across the center of the continent.

Northern ‘Glacies, the Empire of Ice’:

Climate: Extreme cold, permafrost.

Terrain: Steep glaciers and coniferous forests.

Capital: The fortress city ‘Winter’s Fang’ at the foot of the mountain range.

Southern ‘Solaris, the Kingdom of the Sun’:

Climate: Warm and fertile land.

Terrain: The great river ‘River of Life’ flowing from the mountain range irrigates vast plains and flows into the southern sea. A vast desert spreads to the west.

Capital: The water city ‘Aurora’ in the river delta.

Instructions for the Map:

Write the country names ‘氷の帝国グラキエス’ (Glacies, the Empire of Ice) on the north side and ‘太陽の王国ソラリス’ (Solaris, the Kingdom of the Sun) on the south side of the map in large Japanese text.

Draw the central mountain range, river flow, and desert locations correctly geographically.

Draw decorations symbolizing the Four Great Spirits of this world (Fire, Water, Wind, Earth) in the four corners of the map.

Sample Image

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Source: Nano Banana Pro Prompts Library | ID: 1465