I'm all for having sequels for popular games, I really am. However, there's a point when I wonder how soon is too soon, and how many is too many. Take Guitar Hero: On Tour for example. I didn't particularly care for the game or its controller, however, the game sold rather well, which might make one think they would start putting out DS versions of their series out on a semi-regular basis. I just didn't expect them to have one geared up and ready to be released in a mere matter of months.