When Renshaw pulls the gun from the alcohol cupboard, he takes a sip of Jameson whiskey. We can also see a bottle of Chartreuse, and a bottle of Jose Cuervo tequila. The door is a lot more open and the tequila more visible after he readies the gun.
Most modern apartments and appliances have surge protectors built in, so when Renshaw drops the hair dryer in the toilet, the power would not short out.
The episode won two Emmy Awards for Outstanding Music Composition for a Miniseries, Movie or a Special (Original Dramatic Score); and Outstanding Special Visual Effects for a Miniseries, Movie or a Special.
Differences from the original work: Renshaw's initial hit on the toymaker is shown, as is his return by plane to his penthouse apartment. The final ending is modified substantially with the introduction of a Rambo-like commando doll that attacks Renshaw in the pool, then goes after him as he escapes in the elevator. Renshaw defeats the commando but the miniature thermonuclear device goes off as in the short story.
On its premiere this episode was shown commercial-free.
This episode is done entirely without dialogue. This is reminiscent of the Twilight Zone episode "The Invaders", which was written by Richard Matheson, father of this segment's writer Richard Christian Matheson.
In Renshaws's apartment the Zulu Doll from Richard Matheson's TV movie Trilogy of Terror can be seen. Richard Matheson is writer Richard Christian Matheson's father.
"Battleground" is not from Nightmares and Dreamscapes. It is collected in Night Shift (1978).