Since the Contagion Chronicle is a crossover event within the Chronicles of Darkness game lines, the Midnight Library Add On is a way to fill in some holes in your CoD core rules library. The Add On process itself will be explained in greater detail in an update near the end of the campaign, but basically increasing your total pledge amount will allow you to claim additional rewards in our post-campaign Pledge Management system, BackerKit.
We'e set it up with a "The More You Want, the More You Save" system, so incremental rewards from the Midnight Library will cost less per unit. Unfortunately, we are unable to offer Print-on-Demand versions at this time. Due to the nature of kickstarter (and related fees) and the way our licensing works, we couldn't offer the PoD versions of these available titles any cheaper than you can already find them on DrivethruRPG. So, if you're looking for the PoD versions of these titles, you can go to Drivethrurpg.com now and purchase them.
The titles we've included in the Midnight Library are the relevant rulebooks for the Chronicles of Darkness that are currently available. We didn't include anything forthcoming or in production - we want to be able to deliver these rewards as swiftly as possible, so confine the list to existing and available products only.
In our post-campaign Pledge Manager, BackerKit, you will confirm your rewards and select your Add On items. When you select the Midnight Library rewards, you will confirm which title(s) you are interested in. Only during our BackerKit phase - after the kickstarter has completed - will you be confirming your Add On and specific title selection.