Could have been a bit longer though, but it was fun and it kept me entertained the entire time.
People have said its a lot like Braid, while i have never heard of Braid before, i can safely say this is not the first nor second or even third game of this style.
And one person said it stole the black and white from limbo. All i can is, Limbo did not invent black and white. Black and White games have existed long before Limbo.
Everyone is just grasping these games because they are the newest.