Dungeon Crawl Classics is an Old School Renaissance (OSR) RPG published by Goodman Games in 2012. Built on the Open Game License (OGL) and SRD 3.5, it cross-breeds a streamlined version of 3rd edition with Appendix N pulp fantasy.
Its focus is to bring the rough register of Appendix N — the sword-and-sorcery pulp such as Conan and Elric that Gary Gygax compiled as early D&D’s list of inspirations — back to life in play.