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 & Survival
My goodness...What the hell is that!?
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.4
58,130 ratings · Top 30%
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 & Survival: 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
My goodness...What the hell is that!? Keep quiet, idiot! Arrrrgh, the zombie's coming at us!!! The outbreak of a deadly virus swept over the world. Almost all of humanity have turned into zombies. Lead your followers to survive the apocalypse: that is your quest. Match-3 Puzzle meets Strategy! Solve the mysteries and build an impenetrable sanctuary. The future of humanity is in your hands. Tip: Use your brain to defend your brain! ——APOCALYPTIC FEATURES—— ※ STRATEGY + MATCH-3 - Solve puzzles to kill zombies - Arm yourself with strategy and tactics - A combination of a tactical wargame and casual puzzle gameplay - An innovative post-apocalyptic experience ※ BUILD A SANCTUARY - Lead survivors in the last bastion of humanity - Craft cutting-edge equipment to smash your enemies ※ FORMIDABLE HEROES - Superhuman powers emerged alongside the zombie virus - Recruit Heroes from the notorious Noah\'s Tavern - Heroes improve your military and economical strength ※ FRIENDS OR FOES - No one can survive alone, fight alongside your allies - Watch out for potential threats, be they zombies or humans Official Facebook fan page: https://www.facebook.com/PnS.37Games [Notes] Puzzles & Survival is a free-to-play mobile game with in-app purchases. According to 37GAMES\' Terms of Use and Privacy Policy, this application is not intended for use by users under the age of 12. A device with internet access is required. [Subscription Intro] Puzzles & Survival 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. [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/servicePrivicy/privicy Terms of Use: https://gpassport.37games.com/center/servicePrivicy/service
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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 new puzzles and seasonal challenges to keep engagement high.
Assumption to check: Limited variety in puzzle types and challenges.
Validate with people who use this workflow before building.
Hypothesis 2
Optimize server response times and provide a loading animation.
Assumption to check: Long loading times during PvP matchmaking.
Validate with people who use this workflow before building.
Hypothesis 3
Simplify upgrade paths and provide better tutorials.
Assumption to check: Difficulty in understanding character upgrades.
Validate with people who use this workflow before building.
Hypothesis 4
Implement a more balanced ad strategy with fewer interruptions.
Assumption to check: Frequent ads can disrupt 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
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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.
