Up until now, my Nightfall Incident inspired game has been unnamed. I’ve been thinking about it, and probably want something with “night” or “nightfall” or similar in the title to allude to the original. Also, it’s a hacking game, so something related to hacking would be appropriate.
Bearing that in mind, my favourite option is Nightfall Hacker. Like everything else, it might change, but I need a name, so I’m going with that one.