Screenplay, where did you find that? I just listen to the movie, they say it four times. Published screenplays are often different than the completed film. It is possible they did not get permission to use the video game name, so they pretended it was something different in the screenplay. The director already had to do music replacement because his preferred music artist wanted more than he could afford, so he likely said "Ah hell, I am not %$#&! redubbing those lines." No video game is mentioned by name in the feature-length remake, so they were probably avoiding having to deal with any licensing issues or copyright lawsuits now that the entertainment industry lawyers were watching.
Both English subtitle files at opensubtitles.org have various different errors, but they both name Fragger.
82
00:07:25,750 --> 00:07:28,708
I didn't have a Game Boy or Fragger
or whatever it is you're playing.
83
00:07:28,750 --> 00:07:33,375
– How did you know the game I was playing?
– I don't know, I know it, you know I … know it.
84
00:07:33,416 --> 00:07:37,208
– <i>You</i> know Fragger?
– Yeah, I know Fragger. I know it.
85
00:07:37,250 --> 00:07:41,208
– You know Fragger?
– Yeah, I know, it's amazing.
Can we not be in the cold anymore, please?