Just like the other Coca-Cola "Creations" flavors, it's not good...an artificial fruitiness that just kills the taste to me. Ultimate is League of Legends +XP Flavored...ha ha, whatever!
I've tried (and posted here) about 2 other "Creations" flavors: Dreamworld & Starlight and they all seem to be the same and just re-packaged? There's other "Creations" flavors that I haven't seen/tried: Soul Blast (anime inspired) & Byte (gaming inspired)?