Play Sega Master Games Online in the highest quality available. Play Emulator has the biggest collection of Sega Master System emulator games to play. These Sega Master games work in all modern browsers and can be played with no download required. Browse more Sega Master System games by using the game links on this page. We collected the best Sega Master System Games such as Sonic The Hedgehog, Sonic Chaos, and Alex Kidd in Miracle World.