Capture the Flag requires a playing field of some sort.
In both indoor and outdoor versions, the field is divided into two clearly designated halves, known as territories.
Players form two teams, one for each territory.
Each side has a "flag" which is most often a piece of fabric, but can be any object small enough to be easily carried by a person (night time games might use flashlights, glowsticks or lanterns as the "flags").
Sometimes teams wear dark colors at night to make it more difficult for their opponents to see them.
If one team has the opposing team's flag on their territory they may be tagged because they have the opposing team's flag.

The objective of the game is for players to venture into the opposing team's territory, grab the flag and return with it to their territory without being tagged.
The flag is defended mainly by tagging opposing players who attempt to take it.
Within their territory players are "safe", meaning that they cannot be tagged by opposing players.
Once they cross into the opposing team's territory they are vulnerable.

Rules for Capture the Flag appear in "Scouting For Boys" written in 1908 by Baden Powel, the founder of the Scouting Movement, under the title "Flag Raiding".
They also appeared in the 1920 Edition of "The Official Handbook for Boys" published by the Boy Scouts of America.
Capture the Flag requires a playing field of some sort. In both indoor and outdoor versions, the field is divided into two clearly designated halves, known as territories. Players form two teams, one for each territory. Each side has a "flag" which is most often a piece of fabric, but can be any object small enough to be easily carried by a person (night time games might use flashlights, glowsticks or lanterns as the "flags"). Sometimes teams wear dark colors at night to make it more difficult for their opponents to see them. If one team has the opposing team's flag on their territory they may be tagged because they have the opposing team's flag.
The objective of the game is for players to venture into the opposing team's territory, grab the flag and return with it to their territory without being tagged. The flag is defended mainly by tagging opposing players who attempt to take it. Within their territory players are "safe", meaning that they cannot be tagged by opposing players. Once they cross into the opposing team's territory they are vulnerable.
Rules for Capture the Flag appear in "Scouting For Boys" written in 1908 by Baden Powel, the founder of the Scouting Movement, under the title "Flag Raiding". They also appeared in the 1920 Edition of "The Official Handbook for Boys" published by the Boy Scouts of America.
Capture the flag