Capture the Flag

Capture the Flag is a multiplayer game mode that has been speculated to be added into Minecraft in the future.

The objective of the game mode is for two or more teams to try and capture a predetermined item, (most commonly a flag as the name would suggest), from the enemy base to their own and at the same time try to prevent any other teams from doing the same by killing them. The idea of implementing this game mode has received positive reactions from the community.

Rules
Capture the flag is a game where there are two flags and each side tries to capture/take the other team's flag and return it to their own flag or base. Usually you win when the other team captures the other teams flag a couple times or when there is a time limit reached the most flag caps wins.

Unofficial implementation
Although the game mode itself has yet to be officially implemented into Minecraft, Capture the Flag is still played on some multiplayer servers, except instead of using a flag, a suitable drop item such as dirt, sand, wood or colored wool is used as a substitute. Some servers also choose to have chests storing the "flags".

Some multiplayer servers, Classic and regular, choose to use modifications to further enhance the experience of Capture the Flag. Coded signs, block formations, or added blocks can also be used to play Capture The Flag.

History
Capture the Flag was speculated to be implemented in the full release of Minecraft, but wasn't. Notch also mentioned that it may be added later.

As said in Minecon, Capture the Flag will first be available for the Xbox 360 Edition before the PC version or Pocket Edition.