Digital Extremes' supernatural shooter The Darkness 2 is up for grabs on Humble Store for about 30 hours at the time of writing. You might want to grab your Steam key ASAP, this offer works only for PC. No free stuff for consoles today.
In order to claim your game key, you will need to go to Humble's store and link your Steam account to it. You will receive a mail in order to complete the linking soon after, and then you can go to this , add the game to your card and just proceed to checkout. Since your Steam account is linked to Humble by now, you will be able to the game to your library by clicking a single ''Redeem'' button on Humble site.
The Darkness 2 is where paranormal meets The Godfather as you assume the role of Jackie Estacado, who is now a don of the Franchetti crime family. This is not the primary source of his power, however, as he is also a host for The Darkness, an entity that gives him supernatural abilities but has also prevented him from saving his girlfriend, Jenny, from getting murdered.
This game is a sequel to 2007's The Darkness, and as such, it will contain spoiler for the original game. If you want to experience it firsthand, you may want to play through it first, before jumping into the sequel in order to avoid spoilers. Otherwise, you can read what happens in the story on third party sites.
The Darkness series' unique story telling and gameplay come from The Darkness itself, as it influences the story's progress and adds new mechanics to the game. For example, it will give Jackie the ability to summon a Darkling, who is a part of his subconsciousness, and the ability to use two tentacle-like monsters attached to Jackie's body.
As you jump into this paranormal world, you will face Jackie's struggles to keep The Darkness under control, and his attempts to save his girlfriend Jenny from Hell, since The Darkness previously prevented Jackie from saving her life.