Joystiq have scored the first trailer for Penny Arcade's On the Rain-Slick Precipice of Darkness 4, the fourth instalment of the popular indie RPG series based on Krahulik and Holkins' webcomic. Expect demonic talking trains, magical caves and monsters to capture before sending them into battle. Since Robert Boyd is at the helm once again, having delivering the exceptional Penny Arcade Episode 3 and Cthulhu Saves The World, we're rather excited about this.
Episode 4 is out in "Spring 2013" on PC and the Xbox Live Indie marketplace. We've embedded the trailer after the break.