Complex sentence: Swapnote was released on December 21,2011 in Japan and December 22,2011 in North America, Europe, and Australia via the Nintendo eShop, and can be downloaded at no additional cost, and is pre-installed on newer systems.
Split into simpler sentences: Swapnote was released on December 21,2011 in Japan and December 22,2011 in Europe, Australia and North America via the Nintendo eShop. It can be downloaded at no additional cost and is pre-installed on newer systems.