Perhaps to compensate for the fact that they didn’t manage to release anything during the month of August, Invisible City has put out their free October game with remarkable speed. It’s called Blockade, it’s an abstract strategy game, and it requires, of all things, half a Backgammon board. If you’re in the mood for a strategic two-player battle or if you’re just wondering what you can possibly do with a Backgammon board other than play Backgammon on it, you should check this out.