From the Free RPG Day site:
Established in 2007, Free RPG Day works with participating hobby game retailers and RPG publishers to bring new and exclusive RPG quickstart rules and adventure modules into the hands of gamers.
Consumers WORLDWIDE will be able to grab brand new material for a variety of RPGs - no overstock, retail-priced or dead product here. The goal of Free RPG Day is to inspire gamers to play a new RPG, which will in turn, create sales through local game stores.
We are using this Family entry to link all the Free RPG Day entries together. We will not add all the individual items to this family.