Open source game, [d0x3d!], teaches security concepts and is fun to play (opensource.com)
Over at opensource.com, Davis Miller writes about an open source tabletop game (available at Github) that teaches some of the ideas behind network security. "While you seek these valuable digital assets, the network administrators respond by patching all compromised machines, raising an alarm, and sometimes changing the very topology to derail your movements. You and your team work together diligently, checking and raiding machines on the network, trying to not alert the network administrators of your presence. If the administrators feel threatened by any of the activity they see on a network, they'll take your stolen personal data and release it to the Internet. In other words, you'll get d0x3d!!"