Adventurer! Many talented designers of tabletop roleplaying games have joined to celebrate the Bundle of Holding's sixth birthday with this 2019 Birthday Bundle charity benefit. You can find all these terrific RPGs free elsewhere around the web (links below). But, for just a small donation, you get convenient access to them here on your Wizard's Cabinet download page -- and your entire donation (after gateway fees) goes to this offer's designated charity, the RPG Creators Relief Fund. The RCRF is a 501(c)(3) nonprofit charity founded to provide financial assistance to tabletop roleplaying creators suffering hardship due to medical emergencies, natural disasters, and other catastrophic situations.
More details here.