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
Empires & Puzzles: Match-3 RPG
Epic heroes, monsters and action await in this beautiful, tactical match 3 game!
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
98,634 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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
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Combine features and design from your favorite apps.
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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 included19 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
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 Empires & Puzzles: Match-3 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
Implement a balanced progression system that rewards skill over purchases.
Assumption to check: Pay-to-win mechanics frustrate users.
Validate with people who use this workflow before building.
Hypothesis 2
Limit ad placements to non-intrusive moments.
Assumption to check: Frequent ads disrupt gameplay.
Validate with people who use this workflow before building.
Hypothesis 3
Create a streamlined tutorial and hero management system.
Assumption to check: Hero collection can feel overwhelming.
Validate with people who use this workflow before building.
Hypothesis 4
Implement a skill-based matchmaking system for battles.
Assumption to check: Inconsistent matchmaking leads to frustration.
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
Epic heroes, monsters and action await in this beautiful, tactical match 3 game! Featured by Apple! "A challenging game of strategy and puzzles" "We're impressed by this epic match-three adventure" Players are saying: "Awesome game. This will keep me busy for months!" "Really fun, great production values!" Empires & Puzzles is a completely new take on puzzle games, combining match-3 battles and building a mighty stronghold - topped with thrilling PVP duels and RPG elements. Join the battle now! • Match - Send your troops charging by making amazing combos! • Build - Rebuild an immense war fortress! • Collect – Summon hundreds of powerful heroes and troops! • Raid - Fight in PvP battles against players from around the world! • Upgrade – Level up your heroes, buildings and special powers! • Team Up - Fight mighty Titans with your Alliance! • Amazing Graphics – Experience detailed monsters, heroes and visual effects in a majestic fantasy world! Empires & Puzzles is FREE to download and includes optional in-game purchases (including random items). Information about drop rates for random item purchases can be found in-game. If you wish to disable in-game purchases, please turn off the in-app purchases in your phone or tablet’s Settings.
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
React Native
Expo
Supabase
React Navigation
Zustand
React Native Reanimated
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.
