The Classic “Elite Virtual Reality Hackers” idea from, say Shadowrun or Cyberpunk:
-Hacking Ability and Non-Hacking Ability take the place of FA/NFA
-The System takes the place of the Planet
-Threat Tokens become Countermeasure Tokens
-Kills become Exploits or Cracks or something like that
-Flashbacks are largely the same, though I suppose a suitably hackerish name could be thought of for them.
-Development phase is upgrading your rig, learning new exploit techniques, etc.