Feature spec
Goal: Send a clear invoice after finishing a job.
- Add a client, line items, a due date, and payment instructions.
- Preview the total before exporting a PDF.
- Keep an editable draft if export fails.
App Overview
BrownDust2 - Full Burst RPG
▣ Game Introduction ▣
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.5
5,851 ratings · Top 15%
Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included17 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.
States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.
Differentiate and validate
Hypothesis: Contractors need faster repeat invoices more than more templates.
First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.
The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.
Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.
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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for BrownDust2 - Full Burst RPG: map the core Games workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.
Hypothesis 1
Provide extensive customization features for characters.
Assumption to check: Limited character customization options.
Validate with people who use this workflow before building.
Hypothesis 2
Simplify the purchase flow and provide clearer explanations.
Assumption to check: In-app purchases can be confusing.
Validate with people who use this workflow before building.
Hypothesis 3
Implement a more balanced ad strategy, such as optional rewarded ads.
Assumption to check: Frequent ads disrupt gameplay.
Validate with people who use this workflow before building.
Hypothesis 4
Add new game modes or daily challenges to enhance engagement.
Assumption to check: Gameplay can become repetitive.
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
▣ Game Introduction ▣ ■ Welcome to the 3rd Anniversary Cruise Party! ■ The 3rd Anniversary Update is officially live! Celebrate with the all-new Summer Event Pack and see your favorite characters in stunning new swimwear. Claim 1,300 Free Pulls and jump back into the action! ■ A New Adventure RPG with Console-Level Graphics ■ Experience High-End 2D graphics with overwhelming detail! Enjoy the diverse charms of Live 2D characters drawn by top-tier illustrators, along with beautifully designed fields that add excitement to your adventures. ■ Immersive Adventures in Both Landscape and Vertical Mode ■ A user-friendly interface optimized for both landscape and vertical screens! Experience a whole new level of immersion as you explore the expanded world. ■ Console-Style Game Pack that Transcends Time and Space with a Captivating Storyline ■ The game pack system evokes the nostalgia of classic console games! Immerse yourself in a thrilling storyline that unfolds in a multi-universe world and discover what lies beyond. ■ The core of Browndust: battle system with a quarter-view perspective ■ A 3x4 simulation battle system that maximizes the tension! Don't miss the excitement of thrilling battles during adventures with well-designed intuitive turn-based battles ■ User-vs-User PvP and Evil Castle to Complete Your Adventure ■ Constantly test your own strategies and experience the joy of victory! Complete your adventure while enjoying the Evil Castle content that tests your limits.
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
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Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
SUGGESTED BUILD STACK
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BUILD KIT DIFFICULTY
Advanced
From the Build Kit assessment.
A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.
