Project CHUPA, by the end of development (2005-2006), was formally known as DL-CORE or CORE. The initial versions were integrated with a modern setting; beginning with Version 0.13 the setting was removed and the game was made generic and universal. In 2007, the final PDF version was Version 2.0a and the system was released as a "System Reference Document" in HTML format.
From the Introduction:
Welcome to C.O.R.E., the Chupa Open Roleplaying Engine. Developed by the listeners of the Dragon’s Landing Podcast, C.O.R.E. is the perfect introduction for new roleplayers, and is designed for speed and story.
C.O.R.E. focuses on drama and speed of play. Your character’s skills and abilities, and your vivid imagination, rather than his equipment, determine his capabilities. Instead of focusing on providing rules to cover every aspect of a character’s life, these rules are meant as guidelines, and are an aid to multi-player story construction.
Instead of refereeing every little detail, players are encouraged to take an active part in the story and, hopefully, enjoy a richer story because of it