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%.
Is it the same as Madden? For Madden you could go online to play an opponent and download a roster update, but they didn't keep the rosters updated - it was a one-time thing about halfway through the preseason, IIRC.