MasterGear v4.6 for Windows is released. MasterGear 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. MasterGear will also help hobbyists who still write software for these systems to debug their works without using rare and costly development hardware.

MasterGear v4.6 for Windows Changelog:
- Refactored scaling and special effects framework in MG-Windows.
- Optimized scaling for large screens and windows.
- Added option to force hardware linear scaling.
- Enabled "Video | Stretch Full Screen" option with effects enabled.
- Enabled "Video | Force 4:3 Screen" option with effects enabled.
- Added "Video | Interpolate Video | Linear Scaling" option to MG-Windows.
- Added "File | Clear Settings and Quit" option to MG-Windows.
- Fixed small windows behavior in MG-Windows.
- Fixed window position behavior in MG-Windows.
- Saving physical joystick/gamepad selection in MG-Windows.

Download: MasterGear v4.6 for Windows
Source: Here