Combat is a popular target among game hackers. Often they will replace the original playfields with more challenging, or maybe just more amusing arenas. There is even the "Combat Playfield Editor," letting anyone create a new version of Combat with their own graphics. AtariAge assembled a cartridge featuring several new arenas created with the editor, calling it Combat Redux.

Other hacks of Combat have been more thorough. Some have even added A.I., allowing a single player to challenge the computer.