Worms Blast was my first PS2 game, and it isn't superb, but it is not that bad either.
There are 9 characters in the game, namely: Boggy B, Suzette, Chuck, Ethel, Calvin, Stavros, Superfrog, Fletcher, Rocky. Three characters are hidden, and they can be unlocked by completing the single-player puzzle levels. Worms elements can be found as well, such as: stars, crates (with goodies), bazooka, shotgun and so on.
There are several multiplayer options to choose from, and you can also head into the tournament to achieve hi-scores.
It is a good game, but the repetitive, and hard, challenging gameplay can make you bored and nervous after a while.
Sum, it is a good Worms game with plain shooting action. It's - probably - considered to be frustating, since of some of the extremely hard puzzle levels. With logic, speed and skill, however, they can be done without a hitch.