|System(s): Sega Master System, Game Gear, SG-1000, SC-3000|
|OS: DOS, Windows, Linux, Maemo, FreeBSD, OSF/1, Solaris, SunOS, Symbian, Android, Pocket PC, RISC OS, OS/2, BeOS, PlayStation, PC98, Nintendo 64, FM Towns, Amiga, Mac|
|Developer: Marat Fayzullin; Panutat "Jimmy" Tejasen (Windows CE/Pocket PC); David McEwen (RISC OS); Darrell Spice Jr. (OS/2); Brian Verre (BeOS); Bero (PlayStation/PC98); Maxime Henrion (Nintendo 64); Juan Antonio Gomez Galvez (Amiga); John Stiles (Mac)|
|Programmed in: C|
|Last release date: 2017-07-31|
|Last version: 4.0.2 (Android), 4.0 (Windows/Linux)|
MasterGear is a Sega Master System, Sega Game Gear and SG-1000 emulator originally for DOS, written by Marat Fayzullin. The emulator shares part of the source code of fMSX — an MSX emulator previously written by himself.
The original DOS version was released for free on 6 December 1996. The developer later ported MasterGear to Windows and Symbian, which he made available for a fee of $25 and 14.99 respectively, as well as Linux and a few Unix OSes. It was also added to MorphGear, a multi-system emulator for Pocket PC. On 8 July 2915 the Windows version was made freeware. An official Android version is also available on Google Play, which has more features and costs US$4.99 or £4.99.
Although the source code isn't freely available, third parties have ported the emulator to a variety of systems, such as Mac, Windows CE (priced at £20 or US$32), Pocket PC, Acorn, OS/2, BeOS, Sony PlayStation, Nintendo 64, PC98, FM Towns and Amiga.