Now reformulated as Pibb Xtra. Coke is pretty good at winning these competitions. In the U.S., Sprite ultimately knocked for lemon-lime king 7up off of the top. But Coke never got anything to truly challenge Dr. Pepper or Gatorade (PowerAde will always be the econo-version)
Surge (Coke’s version of Mtn Dew) was around for a while, then left, came back, then finally disappeared - liked it, myself.