"You play an elite marine tasked with obtaining the deactivation code for a Strogg weapon. A heavily shielded asteroid codenamed 'The Armageddon Device.'"
"Generations Arena is a mod for Quake 3 Arena that allows for "generations" from Wolfenstein, Doom, Quake, and Quake 2. The player can also play as a default Quake 3 class. It was made for pure nostalgia and fun, letting people play their favorite Id generation; and is also legal, unlike Q2:Generations."