I'm not entirely sure how this part of the forum is supposed to work, but I guess I'll be the first to post in it.

Bad Dudes maxes out their score at 999,999 regardless of how far over you may go.

I have achieved this score many times in 1991 by beating the game on one credit.

On one occasion I did achieve this score before facing the final boss of the game, which he alone is worth 400,000 points.

I suppose this game does have potential for a speed run so we can see who can get to 999,999 in the shortest time.

For now, I'm claiming this top score of 999,999 on Bad Dudes vs Dragon Ninja.