Borderline is a 1981 arcade game by Sega. The player controls a Jeep and has to destroy enemy refineries. There are four stages with different gameplay. The first stage plays very much like a vertical scrolling shooter. In the second stage, the player maneuvers his Jeep through underbrush, and enemies can only follow on its path, a concept later found for example in Dig Dug or Digger. It was a launch game for the SG-1000.