I found a fun multiplication tables game for my son last week at http://www.bigbrainz.com/

There is a free version and an upgrade/premium version. It's pretty boy-centric. We are using the free version. You wander around in a dungeon answering multiplication facts to defeat the ogre. (I think the upgrade has more environments and more monsters.) Needless to say, he's in video game heaven. smile

Jill