Most PC gamers are probably aware of the Humble Monthly gaming subscription. For $12 per month, you get a monthly bundle of games worth over $100. The catch is that some of the games you’ll get are a mystery until after you’ve already paid. But as an assurance, you always get to unlock at least one game early. For the September 2018 Humble Bundle, you actually get a choice.
Source: N4G PC September's Humble Bundle Is Now Available, And It Gives You A Choice