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
Puzzles & Chaos: Frozen Castle
Puzzles & Chaos is a match-3 fantasy strategy game that tells an ancient legend of a Frozen Land.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
21,085 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'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 Puzzles & Chaos: Frozen Castle: 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
Introduce a diverse range of puzzles and regular updates.
Assumption to check: Limited variety of puzzles can lead to boredom.
Validate with people who use this workflow before building.
Hypothesis 2
Simplify the purchase options and clarify benefits.
Assumption to check: In-app purchases can be confusing.
Validate with people who use this workflow before building.
Hypothesis 3
Implement adjustable difficulty settings for different skill levels.
Assumption to check: Difficulty scaling can frustrate new players.
Validate with people who use this workflow before building.
Hypothesis 4
Offer an ad-free experience with a premium subscription.
Assumption to check: Ads can disrupt gameplay.
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
Puzzles & Chaos is a match-3 fantasy strategy game that tells an ancient legend of a Frozen Land. A once prosperous continent now lies frozen due to the bizarre magic of the undead. The humans, dragons, and other magical creatures who once lived here perished, escaped, or were displaced to desolate lands. As a warrior, you are expected to remove the frozen seal, awaken the dragon, and rebuild your homeland using your innate strategic talents. Game Features: 1. Match-3 Battles: Remember! Matching is the key! Match magic tiles to release hero skills. 2. Explore the Unknown: A huge map for you to explore! Visit the Seer's Hut before marching for a head start in resource gathering. 3. Make Strategic Deployments: To fight against the undead, powerful troops are required! Recruit heroes and train units to form a powerful squad. 4. Free Construction: Customize the layout of your castle as you wish. Buildings can be placed anywhere you want! 5. Unite With Allies: Cooperation enhances the fun! By creating or joining an alliance, you will be able to rally against foes and share resources with your allies. 6. Raise the Dragon: How can there be no dragons in a magical world? Put the unfathomable power of the dragon at your disposal! Claim your own Dragon's Egg today! [Subscription Intro] Puzzles & Chaos provides subscription services. Become a subscriber to enjoy exclusive boosts and rewards! 1. Content: Subscribe to claim heaps of rewards on a daily basis and unlock various remarkable boosts. 2. Subscription duration: 1 month 3. Subscription price: $19.99 4. Payment: Via your iTunes account 5. If you are a subscriber, within 24 hours before your monthly subscription expires, the subscription will be automatically renewed UNLESS you manually cancel it before then. 6. To manage and cancel subscriptions, please head to Settings - iTunes Store & App Store - Check Apple ID - Account Settings - Subscription. If you need to view our detailed subscription terms before subscribing, please tap the link below and refer to the fifth section of the agreement. Link: https://gpassport.37games.com/center/ServicePrivacy/service [Help] Do you need help? Feel free to contact us via the in-game Customer Service or send us an Email at: [email protected] Privacy Policy: https://gpassport.37games.com/center/ServicePrivacy/privacy Terms of Use: https://gpassport.37games.com/center/ServicePrivacy/service
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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 Gesture Handler
BUILD KIT DIFFICULTY
Expert
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.
