New ships are unlocked at a certain amount of kills: 26,52,101,201,401,801,1601,3201,12801. At 6401 you get a new map of the galaxy instead of a ship which shows you where all planets,wormholes,black holes and white holes are. list of ships,weapons, etc at http://jestertrek.com/starfighter/
 "The Great War of Prefectures"){kind=icon}
 "Starfighter: Disputed Galaxy"){kind=icon}
 "Castle Crashing \"The Beard\""){kind=icon}