The latest Humble Bundle offers almost 40 games for a total of $30. It includes The Witness, which by itself normally costs more than that.

Some of the games included are Stardew Valley, Nuclear Throne and Invisible Inc. There’s also early access versions of Subnautica and Overgrowth and remastered versions of Day of the Tentacle and No Time To Explain.

The bundle also includes several DRM-free audiobooks and ebooks including The Smart Girl’s Guide to Privacy and Information Doesn’t Want To Be Free, plus the first six issues of the graphic novel The Boys. Humble says the usual price of buying everything individually would be around $600.

It’s a minimum payment of $30, with all proceeds going to the American Civil Liberties Union, Doctors Without Borders and International Rescue Committee. Buyers can choose how the money they pay is split between the organizations and don’t have to give to all three.

Humble offered to match the first $300,000 received, a target it met in a matter of hours.