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amilich

isometric-asset-sheets

by amilich

IsoCity: City building simulation game.

1,520🍴 153📅 Jan 23, 2026

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SKILL.md


name: isometric-asset-sheets description: Generate sprite sheet images for the isometric city game using the GenerateImage tool. Use when creating new game assets, sprite sheets, vehicle sprites, building sprites, or any visual assets for the isometric city builder. Ensures consistent format, sizing, and isometric projections.

Isometric Asset Sheet Generation

Generate consistent sprite sheets for the isometric city game using the GenerateImage tool.

Standard Format

All asset sheets follow this format:

  • Size: Square, max width and height
  • Background: Solid red (#FF0000), no variation in red tone
  • Grid: 6 rows x 5 columns (30 cells total)
  • Style: Hyper-realistic
  • Lighting: No shadows

Grid Layout

Each row represents ONE complete asset (vehicle, building, etc.):

ColumnView
1Isometric facing North West
2Isometric facing North East
3Isometric facing South East
4Isometric facing South West
5Special view (varies by asset type)

Special Views by Asset Type

Asset TypeColumn 5 View
AirplanesGears down, head-first isometric (landing approach)
HelicoptersTop-down rotor view
Vehicles/Cars3/4 front isometric
BoatsDocked/stationary view
TrainsFront cab view

Prompt Template

Using the same format as [reference if available] - red background, 6 rows, 5 columns - I need you to make a new asset sheet with [ASSET TYPE] for my isometric city game. 

Each row should be ONE [ASSET]. The first 4 items should be the [ASSET] isometrically projected 4 times for flying/facing north west, north east, south east, and then south west. The last one should be [SPECIAL VIEW DESCRIPTION].

ALL [ASSETS] SHOULD BE HYPER REALISTIC. [CATEGORY DESCRIPTIONS BY ROW].

NO SHADOWS. [ADDITIONAL CONSTRAINTS]. Full size, 2048x2048 square.

Example Prompts

Airplanes

Using the same format as this image - red background, 6 rows, 5 columns - I need you to make a new asset sheet with AIRPLANES for my isometric city game. 

Each row should be ONE PLANE. The first 4 items should be the airplane isometrically projected 4 times for flying north west, north east, south east, and then south west. The last one should be a gears down head-first isometric view.

ALL PLANES SHOULD BE HYPER REALISTIC. Commercial or private jets. First 3 rows commercial airliners.

NO SHADOWS. For the first 4, NO LANDING GEAR. Full size, 2048x2048 square.

Ground Vehicles

Red background, 6 rows, 5 columns - asset sheet with VEHICLES for my isometric city game.

Each row should be ONE VEHICLE. The first 4 items should be the vehicle isometrically projected facing north west, north east, south east, and then south west. The last one should be a 3/4 front isometric view.

ALL VEHICLES SHOULD BE HYPER REALISTIC. Row 1-2: sedans. Row 3-4: SUVs. Row 5-6: trucks.

NO SHADOWS. Full size, 2048x2048 square.

Boats/Ships

Red background, 6 rows, 5 columns - asset sheet with BOATS for my isometric city game.

Each row should be ONE BOAT. The first 4 items should be the boat isometrically projected facing north west, north east, south east, and then south west. The last one should be a docked/stationary overhead isometric view.

ALL BOATS SHOULD BE HYPER REALISTIC. Row 1-3: small boats (fishing, sailboat, speedboat). Row 4-6: larger vessels.

NO SHADOWS. NO WATER/WAKE. Full size, 2048x2048 square.

Asset Constraints

Asset TypeConstraints
AirplanesNo landing gear (flying views), no contrails
HelicoptersRotors visible, no motion blur
VehiclesWheels visible, no reflections
BoatsNo water, no wake effects
BuildingsConsistent lighting angle

Row Organization

Organize rows by category/size:

  • Vehicles: Small to large, or by type (sedans, SUVs, trucks)
  • Airplanes: Commercial (rows 1-3), private (rows 4-6)
  • Buildings: Similar style/era per row
  • Nature: Trees grouped by season or type

After Generation

Once the asset sheet is generated:

  1. Save to /public/assets/ with descriptive name
  2. Follow the adding-asset-sheets guide to integrate
  3. Configure in renderConfig.ts with correct row/column mappings

Common Issues

ProblemSolution
Inconsistent sizingSpecify "same size for all assets"
Shadows appearingExplicitly state "NO SHADOWS"
Wrong projectionsReference compass directions (NW, NE, SE, SW)
Cut-off assetsAdd "centered in each cell" to prompt

Score

Total Score

80/100

Based on repository quality metrics

SKILL.md

SKILL.mdファイルが含まれている

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説明文

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人気

GitHub Stars 1000以上

+15
最近の活動

3ヶ月以内に更新

+5
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10回以上フォークされている

+5
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オープンIssueが50未満

+5
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プログラミング言語が設定されている

+5
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1つ以上のタグが設定されている

0/5

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