The battle system will incorporate strategy and speed and the time management system will be free from restrictions; allowing unlimited play time. (stevivor.com)
If you like the game, that fee is a good deal, as it offers unlimited play from now until the end of time (or the game's lifespan). (massivelyop.com)
Players can play and preview new user - created content every day, with options to unlock unlimited play. (wp7connect.com)