A New MasterGear 4.2 for Windows and Linux was released today, and this version fixes several bugs in the replay feature and adds remaining replay time display.
MasterGear (MG) is a program that emulates 8bit SEGA videogames on your computer. It runs games made for SEGA MasterSystem (Mark3 in Japan) and GameGear, as well as their predecessors: SG1000, SC3000, SF7000, and Mark2. MG will also help hobbyists who still write software for these systems to debug their works without using rare and costly development hardware.
You can download it from the link below: