So I joined cubed craft for a server with TNTwars, but I also remembered on my last server with TNTwars (which has shut down apparently), they also had a game known as missile wars. Im sure I won't have to explain in detail the gameplay as its already an established mini game, but I wanted to suggest this for the server. I had suggested it to vMason during a match of TNTwars one night and a good number of the players there said yes to it, so thats showing some degree of approval from the playerbase. If you need a link to a map download, click -> http://www.9minecraft.net/missile-wars-mini-game-map/
Let me know what you think in the comments below!