Answer:
Like with all online computer games it runs on Java, so you need that installed and when you play it the game will make using your computer for other tasks slower. Online games with lots of kids who play them are also hunting ground for hackers who will trick the children into giving them remote access to their computer and the chatting on club penguin may not be appropriate for children as I believe they have a chat filter but there are easy ways of getting around that.if he gets there details he can see where they live and take them