Codemasters' racing game F1 2018 is free for a limited time through the Humble Store. The game normally costs 39.99 euro but for the next 72 hours you can get it for free.
To get the game, just go to the F1 2018 page on the Humble Store, and click the "Get the Game" button. Once you get the game, it will be yours forever. The offer ends on Monday, August 10 at 1 p.m. PT or while supplies last. But be careful, because the game cannot be redeemed after August 17.