Its nostalgic indeed, it looks and reminds me of my original tamagotchi. But thats as far as it goes. This critters needs decrease waay to quickly, it poops like a machine. And then instead of making it happy you are supposed to make it strong to battle other people. Again needs go down too quickly and the battling doesnt interest me at all, because you need to have RL friends with this app in order to do so. I think the battling part is lame in general. Overall I think the ideas need an overhaul, the game needs to be re-thought out, slow down the decreasing needs and dont have it poop so much (seriously, go to bed for 2 hours and wake up the screen is all poop and the critter is sick)
As for the other reviews, I have my doubts to them being authentic. And finally this app isnt even worth what I paid for it, and I got it for free on Sunday.