Nope. Nothing similar that I know of. Im sure if a developer made a highly polished game with the same concept it would really be popular.
already working on this app with friends, theirs a group for it too, but its very low kmey, and it will be awesome. i already said to much
Definitely DinoSmash but it's more like that Small Arms game on XBLA than Super Smash. It's too bad Nintendo isn't trying to cash in here. There are tons of people who don't or will never own a gaming handheld but would certainly add games to their phone.