As a surprise for 3DS owners, Nintendo has released a brand new, internally-developed game on the eShop: Dillon's Rolling Western.
Arriving a day earlier than NOA's usual eShop update, the entirely new game stars an cowboy armadillo named Dillon, in a tower defense/action game hybrid.
You use the touch screen to make Dillon roll along, both to get around and to attack enemies, and set up gun towers during the day to defend towns from rocky enemy swarms that attack at night.
It looks great, its a new IP from Nintendo and it's $9.99. Here's a trailer and below that a 'gameplay tips' video that'll explain it all a bit more: