Get this game + play this game = lol.
Once you're familiar with the controls, WA is a tough, solid game that has very little wrong with it.
The game is mission-based, but there are various extra modes you can play, such as versus the computer, deathmatch, and on-line games. Training missions will help gear up novice players for serious play, and the better you do here the more missions you'll be able to play in the single player campaign. I say campaign, but the levels are independent of each other, with their own rules and settings.
Attention perfectionists! You may have a hard time trying to unlock the full wormage, as getting gold on all training missions is nightmarish.
The point of each game is to destroy the other team, although there are exceptions with some levels, as you might have to pick up a particular weapon crate, kill a particular enemy, or survive an (un)natural disaster.
What makes it so fun? What makes it so addictive drool runs down my chin as I am typing this?
First, and most importantly ... WEAPONS. A more fantastical array of death-dealing animals - ahem, weapons - you are never likely to see! Smash your enemy with a baseball bat! Pulverise them with air strikes! Mad cows are also on the menu, as are salvation army ladies! If you're really sadistic, why not infect everyone with an Indian nuclear test!?
But great weapons are nothing without great sound effects, and this shines most bright with team nationalities. Yes, you can even select how your worms speak when they announce their death to the enemy! Particular favourites of mine include Irish, Angry Scots, Soul Man and Cad. These are so priceless I've used them for voices in Baldur's Gate and other video games!
So is it a comedy? Yes and no. There are difficulties aplenty. Don't let that stand in the way of a fantastic game though. You can get a great deal of enjoyment out of WA without unlocking all the secrets, or finishing every level.
The bottom line: Great family fun for everyone, excellent replayability, virtually no learning curve, comes equipped with bags and bags of humour but isn't so outdated it won't work on your PC. One patch and you'll be ready for earthquakes, armageddons and napalm! Nuke a copy today! I mean grab a nuke today! Well, you know what I mean!