my kids really like to play video games, and i want to let them play a bit but we really don't have a lot that is appropriate for a 4yo and 6yo. i'm looking for stuff that has no killing (we have mario and jumping on the little enemies, whatever they're called, is about the extent of the killing stuff i'm ok with). i'd love some educational or puzzle-type games that aren't too hard. what do your little kids play? we have an xbox and a wii.