The game is being offered as part of Xbox’s Games With Gold promotion, which is now celebrating its one-year anniversary by adding an extra free Xbox 360 game to its usual allotment of two. The two other free games for June are Charlie Murder, a beat-em-up released last August, and Super Street Fighter IV: Arcade Edition, the most recent version of the fighting game.

Xbox Live Gold members can download Dark Souls (normally $20) for free starting today and until June 15. Then, on June 16, you’ll be able to download Charlie Murder (normally $10) and Super Street Fighter IV: Arcade Edition (normally $30) for free.

Microsoft also recently revealed how Games With Gold will work on Xbox One. Starting this month, Games With Gold will begin bringing "subscription-based access to free games" to Xbox Live Gold subscribers, starting with Halo: Spartan Assault and Max: The Curse of Brotherhood. As is the case with PlayStation Plus' Instant Game Collection offerings, you’ll only be able to access the free Games With Gold on Xbox One if you have an active Gold membership.