Seriously, I did not know that Youtube has Flash enabled games until today. Am I the only one? Anyway, according to Michael from CNET Asia, he is curious if this kind of games would be in Google+ in future.
BTW, the game is quite fun. It is from Nexuscontraptions, apparently to provide Nexus S (if you click on Learn more).
Actually, to think that this game might appear in Google+ is not that far fetch. First, Google owns Youtube. Since this game exist on Youtube already, it should be able to appear on Google+.
Have fun playing the game and hope that Google+ will have more interesting features.