While we do have some idea of what to expect in Penny Arcade's On the Rain-Slick Precipice of Darkness 4, we have yet to catch a glimpse – until now. This teaser trailer from Zeboyd Games' upcoming sequel promises demonic trains and vast underhells; it promises a cadre of monsters to capture and throw into battle.

Previously developer Zeboyd Games revealed this latest episode would not grace iOS, Mac or Android – all supported platforms for Rain-Slick 3. The upcoming fourth episode will launch on PC and Xbox Live Indie Games some time this spring for 400 MS Points ($5).

This article was originally published on Joystiq.