Graham says subscriptions are at a point where "we can make meaningful deals with game developers to secure great content, we get to write our featured charity a $30,000+ check, and, because we can predict revenues fairly accurately, we've even started funding some small gaming projects, Humble Originals, that you won't find anywhere else and that our subscribers will get to play first."

Supporting charities is a big part of the company's identity, whether it's giving back ten percent of proceeds from the Humble Store, five percent from Monthly subs, or left up to the user to decide in name-your-price bundles. I asked how they arrived at that amount for this service.

"It's always tricky to craft a new business model," said Graham. "When we launched Humble Monthly, we had to do a lot of guesswork about the best way to frame everything so that we could get the product off the ground. By giving ourselves more flexibility with which we can use to pay for game content, I think we have helped the product be more successful and more sustainable, which I believe will actually mean more money for charity in the long run."

Today is the first Friday of the month, which means February's games are unlocked for existing members. The full lineup is Alien: Isolation, Titan Souls, Broken Age, Volume, Penarium, Dropsy, Elephant in the Room (one of the "Humble Originals" made specifically for subscribers), and a "sneak peek demo" of Planetoid Pioneers with custom content.

The early unlock for next month's bundle is Ark: Survival Evolved, that open-world game with ridable dinosaurs. Folks who sign up now will get immediate access to the title, but it's too late to secure February's offerings.