BFG 2704

The BFG 9000 was originally to be called the BFG 2704. Beta versions of Doom included the BFG 2704 which behaved differently to the BFG 9000 in the final released version. The beta version launched a large number of green fireballs which bounced off floors and ceilings. This behaviour is perhaps the reason behind the odd behaviour of the BFG 9000.

The BFG 2704 was originally replaced because, according to John Romero, "it looked like Christmas".

MBF included a modification of the BFG which made it behave like the beta version.