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
Rocket League Sideswipe
Car games and soccer collide in Rocket League Sideswipe! Multiplayer car soccer has been reimagined for mobile devices by the makers of the hit game Rocket League
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.3
108,561 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.
Build your own version
Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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Combine features and design from your favorite apps.
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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 Rocket League Sideswipe: 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 faster matchmaking algorithm or allow users to create private matches.
Assumption to check: Matchmaking can be slow and frustrating
Validate with people who use this workflow before building.
Hypothesis 2
Offer more cosmetic items and customization features.
Assumption to check: Limited customization options for cars
Validate with people who use this workflow before building.
Hypothesis 3
Implement a more seamless ad experience or provide an ad-free premium subscription.
Assumption to check: Ads can disrupt gameplay
Validate with people who use this workflow before building.
Hypothesis 4
Add a comprehensive tutorial or training mode to help beginners.
Assumption to check: Learning curve for new players
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
Car games and soccer collide in Rocket League Sideswipe! Multiplayer car soccer has been reimagined for mobile devices by the makers of the hit game Rocket League. Score goals in fast-paced 2-minute games and customize cars in the Garage. Party up with friends or play online games with players around the world. Drive supersonic race cars and hit the soccer ball into your opponent’s net to win matches. Already a Rocket League pro? Fly into the air and pull off trick shots, even a flip reset! Dominate the soccer field and race to the top of the car soccer leaderboard by participating in worldwide Ranked Matches. Just want to relax and have fun? Online car soccer in Casual Mode lets you perform your craziest maneuvers without affecting your rank. Multiplayer soccer games level up with a combination of action-packed soccer and rocket-powered cars. Play online multiplayer games for free and master the game’s intuitive touch controls, perfectly designed for mobile car battle gameplay. Unlock exciting Rocket Pass Cars and Items by playing online and proving yourself in the Arena. Experience online car game action from anywhere with Rocket League Sideswipe. Play together with friends and become a car soccer hero. Good luck, have fun! Rocket League Sideswipe Features: Fast-Paced Car Soccer - Online multiplayer games: Face off in 1v1 or 2v2 car soccer matches - Thrilling car soccer games await: Compete in 2-minute multiplayer matches - Play online games from anywhere. No prior soccer or driving skills needed - Hit the soccer field at any level. It doesn’t matter if you’re a Rocket League veteran Redesigned for Mobile Sports Games - Arena car action: With only three buttons needed for control, Rocket League Sideswipe offers easy-to-learn gameplay with room for freestyle stunts - Car battle: Chase down the soccer ball with aerial boost and go on the offensive - Play together in a two-player game and communicate with Quick Chat Stickers - Enjoy matches with random in-game changes in the casual Game Mode Mutator Madness Online and Offline Matches - New to Rocket League? Start with our car soccer tutorial to get you the controls you need - Play car soccer online in competitive team games with players around the world - Multiplayer games in Casual Mode let you have more fun without affecting your ranks - Play multiplayer games offline and hone your skills against bots - Play together with friends or show off your best tricks in Private Matches Rocket Pass and Seasons - Online multiplayer games let you earn free Rocket Pass Items - Play car soccer online and climb the Competitive Ranks with each new Season - Ball game with unique rewards: earn Player Titles based on your Rank - Keep things fresh by playing rotating seasonal Modes Car Customization - Customize cars with Items that you unlock as you play car soccer online - Choose from thousands of customization combinations for your unique sports car - Play soccer with a twist and unlock cars, wheels, decals & more! - Track your in-game Item collection. Can you collect them all? Download Rocket League Sideswipe and meet your fated rivals on the pitch of this next-level sports game. Follow for all the latest news and updates: Website: https://sideswipe.rocketleague.com/ Twitter: https://twitter.com/RLSideswipe/ Instagram: https://www.instagram.com/RLSideswipe/ Discord: https://discord.gg/rlsideswipe Facebook: https://www.facebook.com/RLSideswipe Support: https://www.epicgames.com/help/en-US/rocket-league-sideswipe-c5719357738779
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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
Zustand
React Navigation
React Native Reanimated
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.
