Double Fine Productions, the studio behind Brutal Legend, announced that they’re collaborating with Adventure Time creator Pendleton Ward on the upcoming independently published game Broken Age.

The announcement came during the Day of the Devs event in San Francisco and on the private backer forums for Broken Age. Ward will be voicing one of the characters in Broken Age, and the reveal was accompanied online by a video showing him in the studio recording lines and improvising with Tim Schafer.

As announced earlier, Hynden Walch (who voices Princess Bubblegum in Adventure Time) Jack Black, and Jennifer Hale also play characters in the game.

Broken Age made headlines earlier this year as the most successful video game Kickstarter (and one of the most successful Kickstarter campaigns of all time) up to that point. And Pendleton Ward’s cult hit Adventure Time is featured in the upcoming game Adventure Time: Explore the Dungeon Because I DON’T KNOW!

The Day of the Devs event runs until 8PM PDT today, and you can watch the remainder on the Double Fine Twitch channel here.