MasterGear
fms.komkon.org
What it is
MasterGear emulates 8-bit SEGA consoles and computers, including MasterSystem, GameGear, SG1000, SC3000, SF7000, Mark2, and Mark3. It runs on Windows, Linux, and Android. The maker says hobbyists can use it to debug software without rare development hardware. Documentation reports support for about 98% of the maker’s SMS, GG, SF7000, SC3000, and SG1000 cartridge and disk images, while noting compatibility is not complete. Emulated hardware includes the Z80 CPU, console video processors, SN76489 sound, and Mark3 YM2413 FM sound. It can save and load emulation states, but state files are not guaranteed to work across versions on different hardware. Other listed features include automatic GZIP ROM handling, MIDI soundtrack logging, a built-in debugger, cheat support, and NetPlay. Windows and Linux are free; the Android plan costs 430.00 USD once. Game ROM images are not included, and source code is not publicly available.
Spec sheet
- What it does
- MasterGear emulates Sega Mark III/Master System, Game Gear, SG-1000, SC-3000 and SF-7000 hardware and runs their cartridge or disk images.Read 14 Oct 2026 · fms.komkon.org
- Purpose
- MasterGear emulates 8-bit SEGA consoles and computers, including MasterSystem, GameGear, SG1000, SC3000, SF7000, Mark2, and Mark3.Read 29 Sep 2026 · fms.komkon.org
- Intended users
- The maker says MasterGear can help hobbyists debug software for these systems without rare and costly development hardware.Read 29 Sep 2026 · fms.komkon.org
- Platforms
- The maker lists Unix/Linux, Windows, Android, macOS, PocketPC, Symbian and MSDOS ports; MSDOS, Symbian, PocketPC and Maemo/Meego are described as discontinued.Read 14 Oct 2026 · fms.komkon.org
- Support
- Android users are directed to the EMUL8 Google Group or direct email, and the author says genuine bug reports commonly take one or two weeks to resolve.Read 14 Oct 2026 · fms.komkon.org
- Headquarters
- Winchester, Massachusetts, United StatesRead 23 Sep 2026 · fms.komkon.org
- Founded
- 1996Read 23 Sep 2026 · fms.komkon.org
- Maker
- The product documentation credits Marat Fayzullin, whose LinkedIn profile places him in Winchester, Massachusetts and lists Windriver Systems.Read 14 Oct 2026 · linkedin.com
- Android accessories
- The Android listing names Bluetooth gamepads, Xperia Play buttons, iCade, Sixaxis, and Moga gamepads as supported.Read 29 Sep 2026 · play.google.com
- Android extras
- The Android edition adds Cheatopedia, State Exchange, a box-art downloader and improved network-play functions.Read 14 Oct 2026 · fms.komkon.org
- Android features
- The Android app supports State Exchange, NetPlay over local network or Internet, and play using keyboard, gamepad, touchscreen, or accelerometer.Read 29 Sep 2026 · play.google.com
- Android security
- Google Play states that the app does not share data with third parties, may collect app info and performance and device or other IDs, encrypts data in transit, and does not allow data deletion.Read 29 Sep 2026 · play.google.com
- Audio emulation
- MG emulates the SN76489 programmable sound generator and Mark III YM2413 FM chip.Read 14 Oct 2026 · fms.komkon.org
- Cartridge support
- The feature list covers standard and CodeMasters bank switching, cartridge RAM, battery-backed SRAM, serial 93C46 EEPROM and English/Japanese localization.Read 14 Oct 2026 · fms.komkon.org
- Company headquarters
- The Google Play developer address is 11 Plato Ter, Winchester, Massachusetts 01890, United States.Read 14 Oct 2026 · play.google.com
- Company legal name
- Google Play identifies the developer as GARAGE RESEARCH CORP.Read 14 Oct 2026 · play.google.com
- Compatibility
- The author reports that MG runs about 98% of the cartridge and disk images tested, while warning that compatibility is not complete.Read 14 Oct 2026 · fms.komkon.org
- Compressed ROMs
- Builds compiled with the relevant compression support automatically open GZIP files, and the Android documentation also describes ZIP and GZIP handling.Read 14 Oct 2026 · fms.komkon.org
- CPU emulation
- The emulator models the Z80 processor used by the supported systems.Read 14 Oct 2026 · fms.komkon.org
- Debugger
- The product includes a built-in debugger for supported development or hacking work.Read 14 Oct 2026 · fms.komkon.org
- Developer interface
- Unix builds provide a command-line interface with options for system selection, localization, sound, scaling, synchronization, debugging and ROM handling; no public API or SDK is documented.Read 14 Oct 2026 · fms.komkon.org
- Display options
- Official documentation lists normal, stretched and softened display modes, scanlines, frame-rate display and multiple scaling effects.Read 14 Oct 2026 · fms.komkon.org
- Documentation
- The main manual documents installation contents, keyboard mappings, command-line flags, FAQs, hardware behavior and a long version history.Read 14 Oct 2026 · fms.komkon.org
- Emulation features
- Supported hardware includes Z80 CPU, console video processors, SN76489 sound, and Mark3 YM2413 FM sound.Read 29 Sep 2026 · fms.komkon.org
- Input support
- Android supports hardware or virtual keyboards, touch controls, accelerometer input and named controllers including Bluetooth, Xperia Play, iCade, Sixaxis and Moga.Read 14 Oct 2026 · fms.komkon.org
- Integration and licensing
- The maker says companies can license MasterGear for products using SEGA games and can contact him about licensing the games themselves.Read 29 Sep 2026 · fms.komkon.org
- Licence
- The source code is no longer publicly distributable, so the product is proprietary rather than open source.Read 14 Oct 2026 · fms.komkon.org
- Limit: Android file access
- Users reported that Android 11 scoped-storage behavior made folders appear empty and prevented ROM files from being detected.Read 14 Oct 2026 · chrome-stats.com
- Limit: missing controls customization
- The All About Symbian review identified the inability to assign individual keypad buttons as the main missing feature, though it considered the omission minor.Read 14 Oct 2026 · allaboutsymbian.com
- Limit: NetPlay
- A Google Play reviewer reported that local multiplayer connected but showed player one’s game to both devices instead of recognizing two players.Read 14 Oct 2026 · appbrain.com
- Limit: sound and crashes
- Independent user reports describe distorted or choppy sound and crashes or freezes during play on some devices.Read 14 Oct 2026 · chrome-stats.com
- Media features
- The documentation lists automatic GZIP ROM handling and soundtrack logging to MIDI files.Read 29 Sep 2026 · fms.komkon.org
- MIDI recording
- Soundtrack output can be logged to MIDI files.Read 14 Oct 2026 · fms.komkon.org
- NetPlay limitation
- The official Android instructions say NetPlay does not work through NAT and requires the players to be on the same Wi-Fi network or have externally visible IP addresses.Read 14 Oct 2026 · fms.komkon.org
- Network play
- NetPlay supports multiplayer over a local network or the Internet when both players use the same game and have suitable reachable addresses.Read 14 Oct 2026 · fms.komkon.org
- Notable update
- The Android site announced MasterGear 4.9.5 on 17 December 2022 and said it moved to Android SDK 31, JDK 11 and current Dropbox APIs.Read 14 Oct 2026 · fms.komkon.org
- Praise: controls and compatibility
- AppBrain reviewers praised the broad compatibility and settings, including console selection, BIOS region, video, audio and input controls.Read 14 Oct 2026 · appbrain.com
- Praise: emulation quality
- All About Symbian reported that tested Master System and Game Gear titles ran at full speed without crashes or slowdown and that the sound sounded authentic.Read 14 Oct 2026 · allaboutsymbian.com
- Praise: usability
- Chrome-Stats summarizes recurring praise for accurate emulation, responsive development, functional controls, save states and a clean interface.Read 14 Oct 2026 · chrome-stats.com
- Rating on All About Symbian
- 80 out of 100 from 1 reviewRead 14 Oct 2026 · allaboutsymbian.com
- Rating on Amiga Review
- 7.5 out of 10 from 1 reviewRead 14 Oct 2026 · amigareview.amiga.sk
- Rating on AppBrain
- 4.39 out of 5 from 582 reviewsRead 14 Oct 2026 · appbrain.com
- Rating on Chrome-Stats
- 4.42 out of 5 from 664 reviewsRead 14 Oct 2026 · chrome-stats.com
- Rating on Google Play
- 4.4 out of 5 from 675 reviewsRead 14 Oct 2026 · play.google.com
- ROM policy
- No Sega game ROMs are included; users must provide games they legally own.Read 14 Oct 2026 · fms.komkon.org
- ROMs excluded
- The maker says the distribution contains no game ROM images and users must provide their own files.Read 29 Sep 2026 · fms.komkon.org
- Save and load
- MasterGear supports saving and loading emulation states, though a state file is not guaranteed to work across versions running on different hardware.Read 29 Sep 2026 · fms.komkon.org
- Save states
- Users can save and reload emulation states, although a state file is not guaranteed to work across different hardware versions.Read 14 Oct 2026 · fms.komkon.org
- Security and privacy
- Google Play says the Android app shares no data with third parties, may collect app and device identifiers, encrypts data in transit and does not allow data deletion.Read 14 Oct 2026 · play.google.com
- Source availability
- The maker says MasterGear source code is not publicly available.Read 29 Sep 2026 · fms.komkon.org
- Video emulation
- Supported video hardware includes Master System, Game Gear and TMS9918-based SG-1000/SC-3000 processors.Read 14 Oct 2026 · fms.komkon.org
Plans and prices
MasterGear Windows/Linux Free Windows: all versions · Linux: 64-bit Ubuntu Read 29 Sep 2026 · fms.komkon.org
Windows/Linux Free Free binaries · Windows and Unix/Linux builds Read 14 Oct 2026 · fms.komkon.org
Android $4.99, paid once one-time Google Play purchase Android app · 10K+ downloads shown on Google Play Read 14 Oct 2026 · play.google.com
MasterGear Android $430, paid once Android 4.1 and newer Read 29 Sep 2026 · play.google.com
Strong points and limits
Strong points
- Built-in debugger
- NetPlay support
- Handles GZIP ROMs automatically
- Windows and Linux are free
Limits
- Compatibility is not complete
- Game ROM images are not included
- Android costs 430.00 USD once
- Source code is not publicly available
Who it suits
MasterGear may suit hobbyists debugging software for the listed SEGA systems, as well as people seeking emulation on Windows, Linux, or Android.
MasterGear in depth
Read the full write-up
Overview
MasterGear is an emulator for a range of 8-bit SEGA consoles and computers, aimed especially at hobbyists who want to debug software for them. Its system coverage and debugging tools make it a focused option, though compatibility is not complete and users must bring their own game files.
Key features
MasterGear covers MasterSystem, GameGear, SG1000, SC3000, SF7000, Mark2 and Mark3. Its emulation includes the Z80 CPU, console video processors, SN76489 sound and Mark3 YM2413 FM sound. The maker estimates compatibility at about 98% for its SMS, GG, SF7000, SC3000 and SG1000 cartridge and disk images; that leaves a meaningful chance that a particular image will not work.
A built-in debugger gives hobbyists a way to work on software without rare development hardware. Save and load states are supported, but state files are not guaranteed to carry across versions on different hardware. Automatic GZIP ROM handling and soundtrack logging to MIDI files add practical tools for working with games and their audio.
NetPlay is supported. On Android, it works over a local network or the Internet, alongside State Exchange. Android controls include keyboard, gamepad, touchscreen and accelerometer input; named accessories include Bluetooth gamepads, Xperia Play buttons, iCade, Sixaxis and Moga gamepads. The Android app does not share data with third parties, may collect app information, performance data and device or other IDs, encrypts data in transit, and does not allow data deletion.
No BIOS is required, but the distribution contains no game ROM images, so this is not a ready-to-play library. Source code is not publicly available. Companies can contact the maker about licensing MasterGear for products using SEGA games, and about licensing the games themselves.
Pricing
MasterGear Windows/Linux is free at free for all Windows versions and 64-bit Ubuntu. It is the straightforward choice for desktop users who want the emulator without a purchase.
MasterGear Android costs $430, paid once and supports Android 4.1 and newer. This is a one-time purchase rather than a recurring charge, but Android users should weigh that cost against the free Windows/Linux edition. The Android app directs users with problems to the EMUL8 discussion group and provides [email protected] as a support email.
Platforms
MasterGear runs on Windows, Linux and Android. The Windows/Linux plan covers all Windows versions and 64-bit Ubuntu; the Android app requires Android 4.1 or newer. There is no public source code.
Who it's for
MasterGear suits SEGA 8-bit enthusiasts who want coverage across consoles and computers, and hobbyists who value a built-in debugger. It is less suitable for anyone expecting bundled games, complete image compatibility or a free Android edition.
Pros and cons
Pros: Broad coverage of seven 8-bit SEGA systems, with hardware-specific sound support.
Pros: Built-in debugging, NetPlay, save states, GZIP ROM handling and MIDI soundtrack logging offer more than basic emulation.
Pros: No BIOS requirement removes one setup dependency.
Cons: Compatibility is estimated at about 98%, not 100%, across the named image types.
Cons: Users must supply their own ROM images.
Cons: Android is a paid one-time purchase, and state files may not work across versions on different hardware.
Cons: The source code is not publicly available.
Alternatives
For another option focused on Master System emulation, see Sega Master System Emulators; for Game Gear choices, see Game Gear Emulators.
Virtual Jaguar is worth considering if you want a free, open-source emulator core across Android, iOS, Linux, macOS, web and Windows, and can use a libretro frontend such as RetroArch. Choose Gearlynx if its broader platform range is a better fit. Emulicious is a free option for Linux, macOS and Windows, with commercial users asked to seek permission first. Genesis Plus GX is another free choice for Linux and Windows, with source code under a specific non-commercial license and a standalone GameCube/Wii build.
OpenHomeKaraoke, ares, Dega and DSP Emulator are also alternatives.
Verdict
Choose MasterGear if you want a broad 8-bit SEGA emulator with a built-in debugger and NetPlay, particularly on Windows or Linux where it is free. Look elsewhere if you need bundled ROMs, complete compatibility, public source code or a free Android option.
Verdict
MasterGear covers a broad set of 8-bit SEGA systems and includes debugging and NetPlay features. Buyers should account for incomplete compatibility, the need to supply ROMs, and the one-time Android price.
Where Specifiction places it
- Sega Master System Emulators#1 of 259.1
- Game Gear Emulators#3 of 319.0
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