For a list of maps, see Category:Maps
For information on map creation, see Map making
Maps (otherwise known as worlds) are the universe that a player exists in while playing BZFlag. It is downloaded when logging into a server, and cannot change while the game is in progress.
Playing a map
Maps can be played by specifying them command-line to the server, then connecting with a client. Info on running servers can be found at BZFS.