Radian-Helix Media has published a trailer for the mod Fallout: New California. The mod is released on October 23rd and is, in fact, a completely new Fallout game that uses the Fallout: New Vegas engine. Fallout: New California is a prequel to Fallout New Vegas and promises to feature hours of new gameplay, as well as a fully voiced stand-alone campaign. This total conversion mod will add an all-new story around a new player character, an adopted resident of Vault 18, embarking on a journey through the wastelands of the New California Republic’s Cajon Pass.