BFG-10000 (Doom Eternal)
The BFG-10000 is an orbital weapon system that appears in Doom Eternal. Following the destruction of the Argent Facility on Mars, the UAC's board of directors ordered the construction of this weapons system. It was designed by Samuel Hayden as part of an anti-demonic defense grid based on refinements to the BFG-9000, and incorporates that weapon in its design. The 10000 is located in Stickney, the largest crater of Phobos, at coordinates 1°N 49°W. It was built on top of a pre-existing UAC mining and communication relay outpost.
By firing the BFG-9000 through a magnifier array and into a series of reactive lensing rings, a stream of gaseous Argent energy is pumped through the gun barrel which ignites in reaction to electrified plasma, generating a massive energy wave.
The Doom Slayer gains control of the BFG-10000 during the Mars Core level and uses it to blast a hole in the surface of Mars, allowing him to reach an ancient slipgate hidden deep underground. After using the gun, the Slayer takes the BFG-9000 found inside it for use in future battles.