Even though all the original "Stargate" graphics on the arcade machine have been covered and a "Defender II" label added, characters still refer to it as "Stargate: Defender." All are correct names for the game.
In the scene where Dave is giving Mr James advice on how to play the game, Stephen Root accidentally says "OK, Jimmy" as he leaves the room instead of "OK, Dave".
The gig/mention that Bill likes old, stale food (reminding of what his mother made for him) was only used in one more episode.
Eugene Jarvis: Legendary arcade game designer and creator of the arcade classics "Defender" and "Defender II : Stargate." He plays the third delivery guy.