Not much more fun than worms in real life.
The turn-based play means you have to wait forever to do anything if you're playing online. Also, unless it's your turn, you will just have to wait as the other players all go through their arsenals; good luck not getting nuked off the screen.
Another serious issue is that the onscreen characters are very small. They are often smaller than the foliage that surrounds them. It's bad enough I'm getting bombed to smithereens; don't compound the misery by making me struggle to pick out my character as one identical pink blob among all the other tiny pink blobs.
I guess this title is popular because it's violent. Everyone likes to collect the different types of munitions. I need a little more to make a game worthwhile.