In order to play, you have to risk money from your pocket for a single or few attempts with the claw. In most attempts, however, it's like the prize will slip from the claw or you won't even achieve collecting anything with it, since it's made of a slippy metal.
Do you consider this a category of gambling game? What are the chances on long run? Skills matter, or do you have to be lucky, nevertheless?
Maybe is something more or less to a raffle draw whereby you win base on what your luck gives, it could actually be another form of having entertainment in satisfying their customers through engaging them into playing any of these games, but i don't want to see it as gambling since you're not using your personal money with the intention of winning or losing the bet you place, they are not gambling at all, but it may appear so to some as some of these shopping malls make use of such during their promo offers to their customers.