Four months after Batman: Arkham Knight was pulled from Steam for being an unplayable buggy game, it has returned to Steam as of yesterday.

To apologise to fans of the Batman: Arkham series, Warner Bros. Interactive are giving away free digital copies of games from the Batman: Arkham Library. This means the company will be giving away copies of Batman: Arkham Asylum GOTY, Batman: Arkham City GOTY, Batman: Arkham Origins, and Batman: Arkham Origins Blackgate. The free copies are only available to those who have purchased Batman: Arkham Knight for PC prior to 11:59 pm PDT, November 16, 2015.

The game’s developer, Rocksteady, also announced that they will be creating a new “Community Challenge Pack” that will be given free to owner of Batman: Arkham Knight in January 2016.

For a full breakdown of the announcement is available on the Batman: Arkham Knight Forums.