Summary
A classic beer-and-pretzels party game!
The Good
Up to 10 players, huge variety of weapons, numerous tweakable physics and gameplay options ... modifiable text files for in-game "speech" ... a great multiplayer party game if there ever was one. See also
Worms Armageddon for newer game with a similar style.
The Bad
The Lazy-Boy guidance is EXTREMELY funky, but the vertical and horizontal seem to work well. There are some interesting bugs that can occur during combat, particularly with dirt ... you'll see what I mean.
The Bottom Line
Grab some friends and smash each other to little bits!