Play Multiplayer Games on Emulator Online. All the best Multiplayer games online for different retro emulators including GBA, Game Boy, SNES, Nintendo and Sega. There are many online Multiplayer games in the collection. All of the games that you see here are without download, pick any and start playing right away. If you enjoy the game, be sure to vote for it and leave a comment. Multiplayer games that started it all back in the day are now playable within your browser! Start by playing some popular Multiplayer online games like Advance Wars 2: Black Hole Rising, Advance Wars, International Superstar Soccer and Cartoon Network Block Party.