Luffaren is a level designer for Source SDK and is very popular amongst the Zombie Escape community. His most famous works are by far ze_Predator_Ultimate, ze_Frostdrake and ze_Santassination.

After his work on Predator, Luffaren worked a number of years on a secret project, leaving almost no hints or revealing images about its concept and design for a long time (A number of other works have been released during this development time, including Frostdrake and Santassination). As of February 2016, it was made public that the map would be named ze_Castlevania and would be based on the video game of the same name.

A release date is yet to be mentioned.