Play Platform Games on Emulator Online. We have the best Platform games online for different retro emulators including GBA, Game Boy, SNES, Nintendo and Sega. There are over 901 online Platform games in our 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. Platform games that started it all back in the day are now playable free within your browser! Start by playing some of our popular Platform online games like Super Mario World, Super Mario 64, Pokemon X and Y and Pokemon Emerald Version.