Game consoles are just computers meant to do one thing well play games. Nowadays these game consoles may have Wifi capabilities built right in.This allows them to go on the internet just like a computer and surf the net, they can also be used to interactively connect with other users of the same game they are playing and play against one or more people. This can be fun and entertaining but this type of networking is no monitored or filtered in any way. Your child could be interacting with a 40 year old from across the country. That 40 year old may be cursing up a storm or trying to convince your child to run away from home and join them wherever they are.
If you have a wireless network in your house and don't want these systems going online learn how to secure your wireless network by clicking here.
We have provided info on how to enable the built in Parental controls of the game consoles that offer it.
Game Consoles that are internet ready and that have parental controls built in.
Microsoft Xbox and Xbox 360 (has wired network but not wireless out of the box) Parental Controls Link
Sony PS2 (no out of the box network adapter can be added)
These parental controls also control what types of games they can play and DVD's that can be watched. Check out this link to the Entertainment Software Rating Board or ESRB
This video explains in more detail the ESRB ratings and there uses.
Parental Controls