Capture the flag. One of the first shooter gamemodes other than the infamous deathmatch. Usually, two teams battle for the capture of these items of importance for unknown purposes. Usually, they are an unimpressive red or blue square banner. However, some stand out as rather interesting. In Red Faction: Guerilla, your flag also has the dual purpose of an instant kill melee weapon. In the Neo Tokyo mod of Half Life 2, it also serves as X Ray vision to a certain extent, and instead of being a flag, it is the limbless torso of a female android. So what are your favorite kind of flags?
