The PlayStation 3 isn't the only thing getting smaller. At its GamesCom 2009 press conference today, Sony announced a new line of downloadable PSP games called PSP Minis. Capped with a 100MB size limit, Minis are intended to offer players a "snackable" gaming experience. Set to go live October 1 alongside the official launch of the UMD-less PSP Go, the PSP Mini service will initially boast a selection of 15 titles, including Tetris and Sudoku. During its GamesCom presentation, Sony also showed a mock-up for a game called Aqua Panic Oasis. By the end of 2009, Sony expects to have a selection of 50 PSP Minis available on the PlayStation Network.