Controls
X - fire enter influence mode enter lift connect to terminal
O - back button when connected to a terminal.
Story
It is the year 2521 and a cyber attack against the underground cities has caused all robots to malfunction.
You control a prototype influence device armed with a low-powered laser and capable of taking control of these robots. Your task is to clear the 8 city levels of all rogue robots.
Hold X to enter influence mode and run into another unit to pair with it. This is achieved by fighting for control of the robot's cpu. Failure to do so will result in your own circuitry burning out.
Use lifts to move between city levels and use terminals to access the central database. Power coils are positioned at various points allowing you to recharge.
Be careful of robots with short range 'disruptors' and use the terminals to view robot classes that are immune to disruptor damage.
How To Play
The objective of the game is to clear all 8 city levels of robots.
Here's a YouTube video playthrough, almost to the end.

At the start of the game, your '00' unit is armed only with a low-powered laser. To fire the laser, press X plus a direction key.
The first thing you'll want to do is to take control of another robot. To do this:

Without pressing any direction key, hold down X until you turn orange and a continuous bleeping occurs. You are now in 'Influence' mode
Run into another robot. You must be pressing a direction key to do this
This will take you into the grapple sub-game

Grappling
The object of the grapple sub-game is to change more cells of the central CPU (the stripped column in the middle of the screen) to your colour than your AI opponent. Each or the horizontal black lines represents a wire going from the side to the central CPU. Wires may be connected to one or more splitters, joiners, dead-ends or polarity reversers.
You are given a few seconds before the game starts