: I recently watched aliens and spotted this literal checkhov's gun. So
: Bungie's AR was inspired by the gun from Aliens. They don't appear to be
: using a dual firing mode with it, so Marathon improved on the concept.
: Then bungie took the shotgun idea from Terminator 2.
I... don't think that's what "Chekhov's gun" means.
Also not sure what the importance of a "dual firing mode" is or why a video game gun not being limited by the constraints of a physical prop is an "improvement on the concept".