Play SEGA Games Online in the highest quality available. Play Emulator has the biggest collection of Sega Genesis emulator games to play. These SEGA games work in all modern browsers and can be played with no download required. Browse more Sega Genesis games by using the game links on this page. We collected the best Sega Genesis Games such as Sonic Mania Edition, Ultimate Mortal Kombat Trilogy, and Sonic the Hedgehog 3.