Teenage Mutant Ninja Turtles (arcade)/Codes and secrets

Codes
Enter these at the title screen where you select the number of players. You must enter the entire code and start the game before the demo begins playing (this is why the third code encompasses the first two).

Codes (Japanese version)
Enter these at the title screen where you select the number of players. You must enter the entire code and start the game before the demo begins playing (this is why the third code encompasses the first two).

Bonus points
There are a few encounters in the game where an additional point can be earned by attacking something.