Zega Alpha
Zega Alpha (formerly vbsms+) is Sega mark III, Master System, and Game Gear emulator. Compatibility is good, game play smooth, and sound acceptable. Some feature include avi movie recording, pro action replay and save state support.
* Play almost any Sega Mark III, Master System, or Game Gear game
* Play with your PlayStation 3, Wii, and Xbox 360 controllers with the right adapters
* Full menu system inspired by Final Burn Alpha and full screen mode
* Games that use the Master System's Paddle Control can be played
* Use Pro Action Replay codes, rapid fire, or slow down gameplay to beat difficult levels
* Save and load any point in-game with the save state function
* Record and play movies of your gameplay or save screenshots
* Rewind if you lose a life even while you're recording gameplay
* A memory editor with value search capability for cheating and technical purposes
* Disable the background or sprite layer to rip graphics