As long as there's a risk involved and it is some kind of prediction, win or lose type of games, then I would always consider it as a form of gambling.
Sometimes even if it's not directly money as long as it have a value and it is being risk then yes it is gambling.
You are not using your money to gamble so what kind of risk are you referring to?
You should first know what the meaning of gambling is; as long as you're not risking your money for the chance of winning or getting money then it's not gambling, like I said previously it's more like a giveaway (go to games and round) and see them there.