In fact, I have yet to see a poor-looking game of this genre, as if graphics of the sort were hard to make bad (even Super Monkey Ball Jr. does the franchise justice).
You'd think more developers should be lured be the broad appeal of those supposedly easily-built games, but I'm not seeing it. The genre seems latent.
It may still wait for its superstar mascot (so far only Katamari - if that counts - and Super Monkey Ball came somewhere near cult following, yet nowhere near Angry Birds kind of craze), but then I don't think all that many legit supermascots of gaming exist. Vehicular games, for instance, don't appear to have spawned any. That doesn't stop racers from hogging spotlight every now and then.
Relevant - if you watch some Ballance gameplay videos, make sure you listen to the sounds.
*) From what I know, Kororinpa on Wii doesn't output prog-scanned picture, so if you don't have a decent CRT handy, believe me - it's a looker if properly showcased.
