From the Publisher's web site: This is the fifth expansion to the popular Beer & Pretzel's Game STARFIGHT. The expansion features four new ships, and new weapon type. This is not a game itself, you need the Starfight base rules in order to use this expansion. This PDF contains: A rulesheet Four ship sheets Four ship screens Four ship counters An exclusive proton torpedo die! The new ships are all equipped with proton torpedoes and cloaking devices! Expands: Starfight