Karnov (US, rev 6) is another revised version of the arcade classic Karnov, further refining gameplay and features compared to previous iterations. Data East would have likely made changes between this and earlier versions such as version 5. Specific changes between version 5 and 6 may remain undocumented, requiring further research to confirm.  Gameplay elements remain similar to the original, yet with possible balance adjustments or minor feature additions.

Karnov (US, rev 6)

Karian Cross (Rev. 1.0)