The last entry in the Advance Wars series, Days of Ruin (2008), never released in Japan. Weird, right?
Well, in news that no one expected, Advance Wars: Days of Ruin has been made available in Japan as a downloadable Club Nintendo Platinum-level members gift. Platinum members can nab it and a 2014 calendar as their prize,. The game will also be made available next May as a regular prize that can be purchased with 800 coins. It is being distributed as a 3DS eShop download.