"With the PSP version, each user can upload a number of their custom created landscapes to be stored on the game's server, and those landscapes can then be downloaded by other users at any time. The PSP version also has extended community features, enabling players to form clans and compete against other clans, as well as send messages to other players who are connected to the game server (aka WormNet)."
The PSP version will also have a few more customization options for Worms teams, and a "Time Attack" mode, "which are missions that see the player use the Ninja Rope, Parachute or Jetpack to race around a landscape, guiding their worm to an exit point in the shortest amount of time possible." We're excited to see Team 17 acknowledge the PSP's robust hardware capabilities and take advantage of it. When Worms: Open Warfare 2 comes later this year.