Kids love playing in virtual worlds, but how do you know which ones are safe? We've scoured the Web for the best virtual worlds for kids offering online games and virtual environments in a safe, monitored setting. See our grid ratings for virtual worlds with the best safety, privacy, and parental controls. And make sure you talk with your kids about these worlds' rules and responsible online behavior and play alongside if possible. Some of these Web sites send parents updates about their kids' virtual game experiences, so use those as conversation starters to learn how your kid is interacting. Our list includes all the online activities kids love the most -- virtual games, puzzles, safe chat, safe social networking, girl games, and even some positive social messages as well.