You won't find Kingdom Hearts director Tetsuya Nomura's new portable RPG on a Sony or Nintendo handheld. Monotone was developed exclusively for the mobile phone market and is a subscription-based (¥210 per month; under $2) puzzle-RPG, in which the protagonist must restore color and sound to his world (and no, he's not a wolf-god).
For a limited time, Square-Enix is accepting fan-submitted content, presumably to inspire new characters, monsters, and quests that could be added to the game at a later date. There's also an in-game points system, which encourages players to redeem their hard-earned points for ringtones and wallpapers. Monotone is currently available on Japan's DoCoMo network. In other words, you won't be playing it.