Don't kill me for posting this but as an electrician that plays games I had to do it.

http://www.candystand.com/play.do?id=18463

It is a flash based game that you play in your web browser called Electric-Box . You have to get the electricity to reach the target using light bulbs, magnets, solar panels, etc. If you don't like it at least let your kids have a crack at it.