The latest worms game worth playing is probably Reloaded on PC. It's a little stripped down compared to Armageddon/World Party but it's the last worms game where the physics are spot on. After Revolution came out they've all been floaty and janky, grenades that would rather roll than bounce, ninja ropes that actually act like rope (and are therefore completely useless) and just general visual 'bleh' from the 2.5d.