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
Block Craft 3D: Building Games
Craft and grow your own village or build freely in an unlimited open world!
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.6
878,861 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 Block Craft 3D: Building Games: 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
Craft and grow your own village or build freely in an unlimited open world! + Craft anything you like! + Fill the world with your creations! + Build your village! + Help keeping your people happy! Download now and don't miss amazing updates! ● What our players are saying - This is a great game. Easy to play and an easy way to kill some time in between appointments. A must have. I spend hours playing this game. Simplistic but addicting! Love it - Very good game, but completely addicting. Finish whatever you have to before even starting. - The game is really fun. It's got all awesome graphics. It is definitely the best. I have never played such an awesome game. Whoever doesn't like this game has a problem. - That's right one of the best games I have ever played so if you are looking for a good time by just sitting around this is the app for you! - I just downloaded it and it's so fun and addictive I recommend this to people who like games on mobile devices. Privacy Policy: https://www.fungames-forfree.com/games/blockcraft/legal/privacy
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
Optimize graphics and reduce resource usage.
Assumption to check: Inconsistent performance on lower-end devices.
Validate with people who use this workflow before building.
Hypothesis 2
Provide more diverse building materials and templates.
Assumption to check: Limited building options and customization.
Validate with people who use this workflow before building.
Hypothesis 3
Implement rewarded ads that offer benefits without disrupting play.
Assumption to check: Frequent ads interrupt gameplay.
Validate with people who use this workflow before building.
Hypothesis 4
Add a mini-map or teleportation features for easier exploration.
Assumption to check: Difficulty in navigating large worlds.
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
Zustand
React Navigation
Three.js
Firebase
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.
