Car Wars is one of the best board/wargames ever created. Obviously inspired by the Mad Max films, Steve Jackson Games created this beauty of a game in the early 80s by combining two of America's great loves. That's right Guns and Cars. The game takes place in a less oil dependent future where "duelists" drive electric cars and blow the hell out of one another for money. If you can find a copy of "Deluxe Car Wars" on eBay it is well worth the time and money.
Anyway, it appears that Mr. Jackson has created a little game that he likes to run at conventions. This time, players battle one another with Lego Pirate Ships. This isn't a published game and you can't buy it. But the rules are shareware and if you look through the linked site you can see that "Evil Stevie" himself runs this game about four times a year. It's your chance to meet a legend, blow him out of the water, and go "Aaaarrrr!"