Play Wonder Boy Games on Emulator Online. We have the best Wonder Boy games online for different retro emulators including GBA, Game Boy, SNES, Nintendo and Sega. There are over 4 online Wonder Boy 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. Wonder Boy games that started it all back in the day are now playable free within your browser! Start by playing some of our popular Wonder Boy online games like Wonder Boy, Wonder Boy In Monster Land, Wonder Boy in Monster World and Wonder Boy III: The Dragon's Trap.