While Super Mario Galaxy technically has 242 stars, it looks like we might be getting a significant increase in stars this time around according to Miyamoto.
When talking about the game’s increased difficulty, Miyamoto said that the game will have over 240 stars. “In the end, we are going to have more than 240 stars for you to obtain, and we think it’s going to be challenging for any and all gamers.”
It wasn’t exactly clear what Miyamoto was saying, but I don’t think Miyamoto would push it as a difficulty factor unless he meant 240 separate stars. Although it could just simply be the same way the original Super Mario Galaxy added up to over 240 stars.
Hopefully it won’t be the latter. 240 stars would basically double the length of a single play through.