In many of the flying chapters in Lego Star Wars TCS, there are purple tow bombs that you have to use to blast your way through barriers. In the minikit guide videos, the player always has an unlimited supply of these, but I cannot figure out how to get that unlocked.
How do you get the unlimited supply of purple tow bombs.
Side question: what are those purple tow bombs actually called? - Answer: Proton Torpedoes.
The extra is called Infinite Torpedoes.
How much does it cost once unlocked?