Pretty much a mixture of Rampage and a standard TDM.
On one team would be "Godzilla" with all the powers of a fully leveled up Rampage player, and on the other team standard players with a multitude of weapons. The players would be a one hit kill for the Godzilla, but the Godzilla would be able to handle lots of damage. So to be able to escape the Godzilla long enough to kill it, a largish build would have to be loaded, providing temporary shelter for the normal players (For example: Collab City).
Once the Godzilla is killed, the game is reset with another Godzilla randomly picked from the server players.
Perhaps also in addition to the normal Godzilla Gamemode, a slightly different version would require the players to kill Godzilla before a certain amount of bricks are destroyed.
So, good idea?
EDIT: Maybe instead of of Godzilla, it was "King Kong"? And the King Kong would be able to climb up bricks without damaging them by right-clicking.
