App Overview

Yaba Sanshiro 2 icon

Yaba Sanshiro 2

devMiyax · Entertainment

'Yaba Sanshiro' has implemented Saturn hardware using software, allowing you to play Saturn games on iOS devices.

$4.99 · In-app purchases

PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.4
28 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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What's included15 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.

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.

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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> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for Yaba Sanshiro 2: map the core Entertainment 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

Provide a guide or support for popular ROMs and formats

Assumption to check: Limited game compatibility with certain ROMs

Validate with people who use this workflow before building.

Hypothesis 2

Optimize the emulator for different hardware specifications

Assumption to check: Inconsistent performance on older devices

Validate with people who use this workflow before building.

Hypothesis 3

Introduce local multiplayer capabilities for supported games

Assumption to check: Lack of multiplayer options

Validate with people who use this workflow before building.

Hypothesis 4

Add cloud save functionality to sync game states across devices

Assumption to check: No cloud saving feature

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

'Yaba Sanshiro' has implemented Saturn hardware using software, allowing you to play Saturn games on iOS devices. For copyright protection, 'Yaba Sanshiro' does not include BIOS data or games. You can play your games by following these instructions: You can also check out this YouTube video. https://www.youtube.com/watch?v=VxHDJR2Xcf4 # What You Need * iPhone 8 or above * Mac or PC * Saturn game CD-ROM * CD drive connected to your Mac or PC # Steps 1) Dump the CD-ROM image from your own SEGA Saturn game CD-ROM. If you are using a PC, you can use our dumping tool. If you are using a Mac, follow these steps: * Install the CD-ROM dump tool. AnyToISO Converter is recommended. * Dump your CD-ROM. The .cue format is recommended. * Install brew. * Install chdman with this command: ```brew install rom-tools``` * Convert the CD-ROM image to a CHD file with this command. Replace [game file name] with the name you assigned to the CD-ROM image: ```chdman createcd -i [game file name].cue -o [game file name].chd``` 2) Transfer the CHD file to a location accessible by your iPhone. The iCloud Drive is the easiest option. 3) Run YabaSanshiro on your iPhone. 4) Tap the + button and select your CHD file. 5) Tap the CHD file you added. The game will then start. --- # Menu By pressing the menu button, you can display the menu screen. ## Exit Return to the home screen. ## Reset Restart the virtual device. ## Change Disk ## Save State Save the current state. ## Load State Load a previously saved state. ## Game Controller ## Settings ### Cartridge Select the type of cartridge installed on your emulated SEGA Saturn. Backup RAM is an external backup RAM to save game data. RAM is an external RAM for specific games that require a large amount of RAM, like King of Fighters. ### Show FPS Show or hide the Frames Per Second (FPS), which indicates the speed of emulation on your device. ‘60/60’ represents optimal performance, equivalent to the actual SEGA Saturn speed. ### Frame Skip When FPS is less than 60, uoYabause skips frames to reach 60 FPS. If this option is enabled, YabaSanshiro may drop frames, which could disrupt the internal SEGA Saturn emulation. ‘Off’ is recommended for accurate emulation. ### Force Landscape Mode Automatically switch to landscape mode when emulation starts. ### Rotate 90 Degrees The screen is rendered rotating 90 degrees for some vertical scrolling games like 'RayForce'. ### Keep Original Aspect Ratio If this option is disabled, YabaSanshiro stretches to fill the entire screen. Otherwise, YabaSanshiro maintains the classic 4:3 screen size. ### Rendering Resolution * Native - Native resolution of your iOS device. * 4x * 2x * Original - Original Saturn resolution. ### Sound Engine You can choose between 'High quality but heavy' or 'Low quality but light'. ### Controller YabaSanshiro includes an on-screen gamepad, but you can also use MFI game controllers, which Apple officially supports. License: GNU GENERAL PUBLIC LICENSE Version 2 https://raw.githubusercontent.com/devmiyax/yabause/master/LICENSE Source Code: https://www.yabasanshiro.com/download Privacy Policy: https://www.yabasanshiro.com/privacy

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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.

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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.