This app displays the release date, title,maker and price for all upcoming japanese games (PS3,PSP,NintendoDS/3DS,PC,Xbox360,Wii). Most of the game titles are written withjapanese characters, so it's recommended that you can readjapanese.
If you click the name of the game you will be taken to Amazon

The buttons are also in japanese, so if you can't read kanji,here is a translation:
前の月へ = previous month
今月へ = this month month
次の月へ = next month
条件を絞る = apply filter
全て = all