Contrary to what was previously announced, THQ and Team17 Software's Worms: A Space Oddity will not have any online gameplay features. The reason for the exclusion of online elements was not explicitly stated, but here's an excerpt from THQ's statement about the matter:

We've chosen to focus on making the best possible local multiplayer experience through fast-paced gameplay and entertaining party-games. Players will get even more fun and satisfaction from being able to see the reaction of their friends and taunting them with attacks face-to-face.