Worms Armageddon is one the best games I've ever played. I always see a new version and get excited but the new ones always have about half the weapons as Armageddon.
You really haven't lived until you've died by a holy banana donkey armageddon nuke. (Actually, it made some balance fixes cool, like making certain guns more precise/accurate, or to make some more interesting/tactical.)
Because of The Fiddler, I never could understand why there wouldn't merely be oodles more weapons with each new game. Seemed like a no brainer. Oh well.
It also have one of the best game theme songs: https://www.youtube.com/watch?v=6D4Yr3ebNoQ