I've decided that I want to improve my singing. In order to give me incentive to practice (and regular feedback), I thought getting a video game might be of help. I know that it's no substitute for actual voice lessons, but I'm not shooting for Carnegie Hall, and I've accompanied various choirs for over a decade, so I know a fair bit about technique. My biggest problem is pitch, and that's what I'm primarily looking to improve.
Is it possible (or, perhaps, reasonable) to use video games in this way? If so, is there any game in particular that's good for real-world vocal improvement (i.e., that rewards traits that are desirable in actual singing), or are they all essentially the same?