If you're a fan of point and click adventures that hail from the '90s, then Full Throttle will probably be a game that you're familiar with. This classic Lucasarts tale of motorcycles and murder was remastered by Double Fine just last year, bringing this leather-clad adventure to a new generation of gamers with a fresh lick of paint for good measure.
And now to the good news that we alluded to in the headline: it's currently free on GOG. To grab your copy all you need is to have an account before 2 pm on December 15 and then click on all the right buttons to add the game to your account - it's all very straightforward. While you're there, you'll probably notice that the site is also hosting a winter sale, so who knows what retro bargains you'll find therein.