NOBY NOBY BOY™ jumping to the sky to meet GIRL.

[hellopotato666]

You can indeed play two player. If a 2nd controller is detect a 2nd Boy appears. The camera will only follow the first, so you have to either zoom out quite a bit or stay close to one another.

[undefineduser1337]

Wait... how do you get larger? (Not long-wise, but larger in general... yo uknow... eat bigger things.)

[Madiman]

Can you play with two people at the same time? And how do you get to the moon and other places GIRL has reached?

[00Kirby0]

Its one player only, and if you hold up and press start, you can visit different planets.

[Ultimaflims]

That other person is the OP's ass