GodGames has released Castle Attack, a free 2D minigame where players must defend a castle as it is being built. After each successive structure is built, players move on to the next level, where more difficult opponents attack the castle. The minigame is a promotion for Stronghold, a real-time strategy game based on siege warfare and castle building. Stronghold is currently in development at FireFly Studios, and it is scheduled for release this fall. For more information, download Castle Attack from the link below and take a look at our previous coverage of Stronghold.