Kotaku writes: "A terrible notion lingered in my mind as I played Square-Enix's innovative tower defense WiiWare game: I might have to pay extra to beat this thing.
There may be no scarier issue in gaming than the clash of creativity and commerce. There are a range of possible problems: A great game idea doesn't get financial backing. A high price keeps a good game from selling. Or go back to Pac-Man or any other arcade classic. Witness a level of difficulty designed to ensure that you'd have to keep paying to keep playing."