The Worms games are fun, but they've about reached the limit of what they can do with them. This is the second handheld version (the first one came out only a year ago). Could be a fun portable game. IGN seems to be the only ones who rated it, and they gave it an 87%.
Latest word has Best Buy advertising this game as including parts for lead and bass guitar, as well as drums and microphone. So looks like a pretty transparent Rock Band rip-off with Aerosmith's (and other bands') songs.