lego star wars
if you have a boy in the 5-6 year old range, there's no game that has been better than lego star wars. not only is this the most age appropriate game for kids of this age, but it's got a great two player simultaneous mode that will allow you to play the game with your child. the designers clearly had this in mind as the manual comes with a "parent's guide". it just does an awesome job moving two players around the screen, allowing one player to drop in and out as needed, and most importantly saving your progress as you go. we now have this on GBA and PS2 - both highly recommended.
