https://www.gamespot.com/articles/humble-store-sale-drops-prices-on-racing-games/1100-6457993/

It's not the weekend yet, but the Humble Store just kicked off a weekend sale it's calling the "Festival of Speed." To celebrate games that let you go fast, the store is dropping prices on a number of the biggest racing games on the market. The discounts vary, but they go up to 80% off.

Last year's Dirt 4 got one of the bigger price drops, down to $18. This is a challenging, realistic game that puts you on dangerous dirt roads and makes you react to your co-driver's instructions from the passenger seat. It's more newcomer-friendly than the also-excellent Dirt Rally, which is on sale for $12.