Blood and Swash / Thunder and Plunder has been out of print for a couple of years. I have just loaded it to War-games Vault for purchase as a pdf download. There were a couple of games using these rules at Historicon, and before I even got home Chris had received in a inquiry how to get them. These remain a very fun set of rules despite their age. We have used them for their intended purpose (pirates) and also ancient skirmished to WWII. Enjoy!
