sentences:  "Invader Zim" was originally intended for 11–15 year olds, but due to its poor time slot placement, it ended up being viewed primarily by 6–10 year olds, many of whom were turned off by the show's dark and disturbing nature, resulting in the show receiving poor ratings and viewership.Even though "Invader Zim" usually aired later at night, the show never found a time slot that the creators of the program thought was suitable for it and the show continuously suffered in ratings amongst 6–10 year olds, Nickelodeon's core demographic.In an interview with "IGN" in 2004, Jhonen Vasquez said that when it became apparent that Nickelodeon was the "place for kids" but not "kids who want their eyes ripped out", they had asked for "Invader Zim" to be transferred to MTV or a more "adult network" similar to what Nickelodeon had previously done with "The Ren & Stimpy Show", as the series did not feel right on Nickelodeon and would have likely found greater success elsewhere.