Speaking at GDC, Katamari Damacy creator Keita Takahashi revealed that the PSN title Noby Noby Boy was developed on the Xbox 360. As to why it was then released exclusively on the PSN, Takahashi said that he dislikes seeing so many people staring down at handheld games on the subway. He joked, "Maybe it's not such a good thing if a game sells a lot of copies. So we put it on the PS3 as a download only title so it wouldn't sell as many." On a more serious note, Takahashi said that he likes that the analogue sticks on the PS3 controller are aligned horizontally, as opposed to the asymmetrical setup on the Xbox 360 controller. Feel free to consult his diagram above if you're confused.
Don't get your hopes up just yet, 360 owners, Takahashi didn't drop any hints that Noby Noby Boy would be twisting its way to 360. In fact, he pretty much crushed any hopes it might, saying, "Well, this game is not being sold well, so I can't support Xbox at all."