GB stands for "Galactic Bloodshed", it is a piece of Internet history.
GB is one of the original update-based client-server multi-player 4X Internet text games. Expand your empire and exterminate your opponents as you explore the galaxy and exploit its many resources.
GB was first written in 1989; it presented an alternative to the very complex game 'Empire'. Both are 4X games, however, GB appealed to sci-fi fans. It never quite gained the popularity of Empire, however, those that played GB were hugely fanatical about it. The game itself required less daily time to play than Empire and dealt more with combat and less with starving civilians. GB is one of the first true examples of Open Source on the Internet; most admins that ran the game also contributed to the code.
GB is a game played over the Internet by several users at various sites. The remote site, where the game and its database reside, is generally referred to as the "server". To connect to a game, players use a program called a "client" that is run from their local computer.
(From the Galactic Bloodshed FAQ)
I received permission from the authors of GB on December 9, 2021 to relicense the game to apache2.