There aren’t that many unique games on the App Store, and that means when you can pick one of them up for free it’s time to celebrate. That’s the case right now, because the incredible Where Shadows Slumber is available for nothing at all.

The game is all about light and shadow and sees you leading an old man through a series of tricky puzzling levels. There’s a deep story about life and death, and some of the most interesting adventuring you’re going to experience on your iPhone or iPad.

You’re carrying a lamp with you and the world you’re exploring changes whether it’s in light or shade. It’s a super smart mechanic that opens up some truly intriguing possibilities. You can check out the video we’ve embedded below to get a better idea of how everything works.

Looks pretty darn good, right? Where Shadows Slumber is one of those games that gets under your skin and stays there. Not in a creepy way, but in a life-affirming. question-asking way. Such is the potential power of gaming.

You can grab Where Shadows Slumber from the App Store by clicking here. This is the first time that the game has been free, and we’re not sure how long the sale will last. So if you’re even slightly interested in giving Where Shadows Slumber a go, we’d suggest you snap it up sharpish.

Have you already played the game? Want to share your experiences? Maybe you’ve got a question before you take the plunge and download it? Whatever the case, make sure you let us know in the comments section at the bottom of the article.