Given the invitingly demented image you're likely to have clicked on to reach this review, it seems fair to guess that we're addressing a mixture of the bored, the curious, the parent and the Japanophile.
The bored and curious among you would do well to pay close attention to the following. Hello Kitty: Roller Rescue is an extremely bright and colourful, saccharine-sweet, formulaic, unchallenging and unremarkable game that you'd do best to ignore. The parents among you would do well to cut your children in half to establish their age (unless there's a better way) and then give up if they're old enough to throw or catch a ball. The Japanophiles among you would do well to send us obscure sweets and cuddly toys so that we can spice up our fairly boring surroundings. Oh and, if you're anything like some of our Japanophile friends, to have a wash.
Completing Hello Kitty: Roller Rescue will probably take the average child less time than it takes to get bored of a Pingu video. The formula goes like this: For one stage, roller-skating Kitty dashes around an incredibly fluffy and inoffensive environment bashing little block-men with her wand, occasionally having to do something as complex as retrieving a key to open a big gate marked with a pink arrow, and then stands in an illuminated circle and dances, which is the cue to fade to black. For the next, she does more or less the same thing, but perhaps with some slight variation in objectives and block-man personnel. For the third, she tackles a big block bad-guy who will be encased in some sort of nasty machine that has to be bonked several times with a nearby prop.