Fun, entertaining and interesting. But it's the same gameplay, the same visuals, the same sound, same environments, same characters, same enemies... Also, it's a really short experience: an hour of gameplay that it's not enough for our money.
It's the gaming equivalent of walking from your bedroom to the kitchen, opening a cupboard and eating a sneaky between-meals biscuit. It's totally unnecessary and not entirely satisfying. But it does taste quite nice.