 Some publishers thrived under these restrictions, others adapted by canceling titles and focusing on Code-approved content, and others went out of business.Gaines believed that clauses in the code forbidding the words "crime", "horror" and "terror" in comic book titles had been deliberately aimed at his own best-selling titles "Crime SuspenStories", "The Vault of Horror" and "The Crypt of Terror".These restrictions, as well as those banning vampires, werewolves and zombies, would make EC Comics unprofitable and Gaines refused to join the association.