Kega Fusion

Fusion is a Sega SG1000, SC3000, SF7000, Master System, Game Gear, Genesis/Megadrive, SVP, Pico, SegaCD/MegaCD and 32X emulator for Win9x/ME/2000/XP/Vista/Win7, Mac OSX(Intel), and Linux

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Kega Fusion 3.64

NetPlay

Review
PROS	Support for up to 4 (5??) simultaneous people Can emulate every console, handheld and peripheral released before the Saturn In-game chat, so you don't have to switch between windows Every player can share Controller 1 at the same time so you can take turns with single player games Netplay can be finely tuned to give the smoothest experience possible (with slight input lag)
CONS	The emulator is extremely sensistive and desynchs if you focus on another window, move the window around or minimize it Chat messages appear too briefly on screen