The PC version of Worms Ultimate Mayhem will arrive on Steam September 28, a one-week delay from its previous pronouncement of war. Launch dates for operations on the Xbox 360 and PS3 are still to be determined.

Along with today's debut delay announcement, Team 17 wriggled out a new "customization" trailer. The clip features some of the 100 fashion items available for the Worms, along with showing off the "weapon factory," which allows players to customize how some items in their arsenal deliver wormy death.