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 599 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 Pokemon X and Y, Super Mario World, Pokemon Emerald Version and Super Mario Advance 4.