The Humble Monthly subscription plan delivers you a selection of new games every month, plus it gives you 10% off everything in the Humble Store, and donates 5% of each month’s proceeds to charity. If you are a PC gamer, then this is one of the best Deals in gaming.
At the moment for $12 you can download Civ VI, Owlboy, and some Civ DLC, cancel your subscription before it renews (if you wish), and those games would be yours to keep forever. I don’t recommend canceling, because the games in value far more exceed the cost of subscription. The games that gets added every month are great.