The sale includes titles like The Outer Worlds at 55% off, Watch Dogs Legion at 75%, Truck Driver, Ace Combat 7 Skies Unknown, Red Dead Redemption 2 Ultimate and tons more including a few classics like the Bioshock collection for $8 each!
source: https://www.xbox.com/en-US/promotions/sales/harvest-sale?ocid=harvest-sale_announce_soc_omc_xbo_tw_photo%20?ocid=Sales_soc_omc_xbo__Photo_buy_11.2.4