Developer Shin'en Multimedia have announced that all of their eShop games are currently on sale in North America with a 30% discount. Here's the official word straight from Twitter:
Shin'en Spring Sale on US eShop starts today!Get ALL Shin'en eShop games with a 30% discount. Only for a limited time. Catch them all!
— Shin'en Multimedia (@ShinenGames) April 30, 2013
Shin'en's games include Nano Assault Neo on the Wii U, and the 3DS titles Nano Assault EX, Nano Assault Neo, Fun! Fun! Minigolf TOUCH! and Art of Balance TOUCH! The company didn't say when the sale will end, so be sure and start downloading as soon as possible if any of their games interest you.
Shin'en working on two new games, Nano Assault Neo selling well
Review: Nano Assault Neo
Nano Assault Neo - 27 minutes of gameplay footage