Brutal Legend is Double Fine's heavy metal themed action-adventure with some RTS elements thrown in during the later portions of the campaign. It is a strange combination, there's no getting away from that, but its certainly unique enough to be worth a look. As such, I am very glad to say that Brutal Legend is completely free to grab on Humble Bundle for the next 24 hours!
Its important to mention that you don't even need to install Brutal Legend in order to claim it forever, just add the activation key to your Steam account and you'll be golden. With that said, allow me to share with you the original trailer, just so you get an idea of whether Brutal Legend is something you would even want to play. Have a look:
While you're there, make sure to also check out the currently ongoing sale. I won't go into any details as there are far too many games to cover, but I would personally recommend grabbing both Dark Souls 2: Scholar of the First Sin and Total War: Warhammer. Both are truly excellent and lengthy games, which combined with their massive discount gives them quite the bang for your buck. So if you're even remotely interested in these types of games, I would heartily recommend at least giving them a look. Enjoy!