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
Diablo Immortal
Command Hell
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
303,181 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/
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 Diablo Immortal: 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 rewards system that encourages free play.
Assumption to check: In-game purchases can lead to pay-to-win mechanics
Validate with people who use this workflow before building.
Hypothesis 2
Enhance matchmaking algorithms for faster dungeon entry.
Assumption to check: Long wait times for dungeon matchmaking
Validate with people who use this workflow before building.
Hypothesis 3
Provide more character classes and cosmetic options.
Assumption to check: Limited character customization options
Validate with people who use this workflow before building.
Hypothesis 4
Introduce varied quests and dynamic events to keep gameplay fresh.
Assumption to check: Repetitive gameplay can become boring
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
Command Hell. Rule Every Battle. Unleash the Warlock, the newest class in Diablo Immortal, Blizzard’s free to play action MMORPG set in the Diablo universe. Harness forbidden magic, form dark pacts, and fight alongside The Soulgorger — a permanent demon companion that joins every battle. No summons. No cooldowns. Just relentless pressure as you dominate enemies solo or with your clan. Master positioning, control the battlefield, and dictate the flow of combat. This isn’t just a new class — it’s a new way to conquer Sanctuary. A DARK FANTASY ACTION MMORPG The world of Sanctuary is torn apart by the Eternal Conflict between angels and demons. As humanity’s last hope, you’ll explore a shared open world filled with danger, demons, and legendary rewards. Diablo Immortal delivers nonstop action RPG combat, deep progression, and an epic dark fantasy story — all optimized for mobile and PC. COMBAT WITHOUT LIMTS — ANYTIME, ANYWHERE • Real time ARPG combat with responsive controls • Solo play, co op dungeons, raids, and PvP arenas • Seamless cross platform play across mobile and PC A LIVING, EVER EVOLVING WORLD Sanctuary never stands still. • Frequent updates with new story chapters and features • Massive world bosses, events, and seasonal challenges • Iconic locations inspired by Diablo lore PLAY TOGETHER IN A TRUE MMORPG • Form Warbands for small group co op • Join Clans to earn rewards and dominate leaderboards • Raid dungeons, trade loot, and battle other players Your choices shape your legend. FORGED BY BLIZZARD With AAA production, constant updates, and endless ways to play, Diablo Immortal is the ultimate mobile MMORPG for Diablo fans. The war for Sanctuary has begun. Download now and become a legend. IN-GAME PURCHASES (INCLUDES RANDOM ITEMS) ©2026 BLIZZARD ENTERTAINMENT, INC. AND NETEASE, INC. ALL RIGHTS RESERVED. DIABLO IMMORTAL, DIABLO, BATTLE.NET, THE BATTLE.NET LOGO, AND BLIZZARD ENTERTAINMENT ARE TRADEMARKS OR REGISTERED TRADEMARKS OF BLIZZARD ENTERTAINMENT, INC
Written user reviews are not shown here. Check current App Store reviews >
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
Redux
Firebase
react-navigation
Zustand
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.
