Telltale Games today announced the release date for the second chapter of its Batman episodic series. Episode 2, titled "Children of Arkham," will arrive on September 20 for PC, Xbox One, and PS4.

Release dates for other platforms will be announced later this month, Telltale said in a blog post.

Telltale also announced that it's doing something cool related to Children of Arkham this weekend. The developer will hold a panel at PAX West where it will play the episode and let attendees make decisions about what happens in the game. Attendees can use their mobile device to help determine what happens on-screen. This event, which will be held Saturday, September 3, at the Wyvern Theatre at the Westin in Seattle, will be hosted by Dan Casey from Nerdist.com. The show kicks off at 8:30 PM PT.

The Batman game will also be available to buy on a disc from retailers starting on September 13. This will include the Season Pass Disc, which comes with the first episode, while the remaining episodes will unlock digitally once they become available. The Season Pass Disc comes to Europe on September 16.

The first episode of Telltale's Batman series, Realm of Shadows, came out in August. GameSpot's review scored it an 8/10.

"While many fixate on breaking the Batman, Telltale wants to bring down Bruce Wayne, and it demonstrates an understanding that people and relationships are the key to this," reviewer Tamoor Hussain said. "Episode one begins the process of unravelling him, and sets the stage to lay him bare. Impressively, by sticking to its strengths, Telltale also delivers on the experience of being Batman. Realm of Shadows establishes a compelling Bruce Wayne narrative and is an exciting start to the series."