The Team17 Softography Says...
Worms™ for Xbox™ Live Arcade is a hilarious and cleverly-balanced turn-based strategy game in which teams of worms battle across bizarre randomly-generated landscapes for supremacy. Each team takes it in turns to pick off the opposing teams using crazy weapons, tools and other utilities and whatever foul strategies they can devise. Worms die when they lose all of their energy or plunge into the water. The winning team is the one that manages to survive the mayhem and have worms left standing when the dust settles. Sound simple? Easy to play but difficult to master, it’s a game of deep strategy and cartoon-style visuals, packed with hilarious worm-destroying entertainment!
Dream17 says...
Formerly titled Worms HD and once rumoured to be called Worms: Defeat (or Day of Defeat), this Live Arcade version of the popular strategy game is based rather heavily on Worms: Open Warfare, featuring near-identical controls, graphics and physics. Much of the content has been stripped out to get the game to fit into Microsoft's old 50MB filesize limit for Live Arcade titles (the limit was increased to 150MB the Monday before Worms was released), leaving the game with 5 International speechbanks and three landscape themes. More are expected to be released via the Live Marketplace, although whether they will be free or not is another question entirely.
As with Worms: Open Warfare, the weapon set has been stripped back to the very basics, with almost none of the weapons introduced in Worms - The Directors Cut or later games appearing. The exception to this rule is the Jetpack, which appears to be taking the place of the Bungee. Again, like W:OW the Minigun has been omitted for reasons unknown.
The biggest addition is the online play which, while not the most perfect method of playing 2D Worms online, does feature Rankings and a Leaderboard, features which at time of writing are not available in any other online Worms game (they were originally in Worms Armageddon, however hacking forced Team 17 to disable them. In addition to this, players can voice-chat with each other, which means that Puppet Mastery is soon going to become something to take a bit more seriously in online Worms games...
Oh, and I'm sure Worms will eventually make it to the PS3. That is, once Sony get the console *working*.