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
Cube Land Puzzle Game
Blast your way through colorful cube worlds! Cube Land Puzzle Game is a satisfying 3D block puzzle where every shot counts.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
39,642 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 included18 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 Cube Land Puzzle Game: 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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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Blast your way through colorful cube worlds! Cube Land Puzzle Game is a satisfying 3D block puzzle where every shot counts. Aim color matched blasters at cube structures and watch them crumble piece by piece. Plan ahead, pick the right blaster at the right moment, and clear each level with style. WHY YOU'LL LOVE CUBE LAND PUZZLE GAME • Satisfying destruction, every block blast feels great • Easy to pick up, genuinely clever to master • Hundreds of handcrafted 3D cube puzzles • Relaxing pace with no time pressure • Play anywhere, works offline Think smart. Aim true. Blast it all. Download Cube Land Puzzle Game and start clearing your first cube world today!
Written user reviews are not shown here. Check current App Store reviews >
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 dynamic level generation for unique experiences.
Assumption to check: Levels can become repetitive and lack variety.
Validate with people who use this workflow before building.
Hypothesis 2
Integrate social sharing for scores and achievements.
Assumption to check: Limited social features and sharing options.
Validate with people who use this workflow before building.
Hypothesis 3
Offer clear explanations and benefits for each purchase.
Assumption to check: In-app purchases can be confusing or overwhelming.
Validate with people who use this workflow before building.
Hypothesis 4
Implement user-controlled ad frequency and rewards.
Assumption to check: Ads can interrupt the gameplay.
Validate with people who use this workflow before building.
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
Zustand
React Navigation
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.
