The American version of "Teenage Mutant Ninja Turtles 2" and the Japanese version of "Teenage Mutant Ninja Turtles 2" are different in game difficulty, game levels, game music and game character voices.

1. The game difficulty is different: the American version of "Teenage Mutant Ninja Turtles 2" is relatively more difficult and the enemies have stronger attack power, while the Japanese version of "Teenage Mutant Ninja Turtles 2" is relatively simple and easier. Clear customs.

2. Different game levels: The levels in the US version of "Teenage Mutant Ninja Turtles 2" and the Japanese version of "Teenage Mutant Ninja Turtles 2" are not exactly the same. Some levels have been deleted in the US version and some new levels have been added. , while the Japanese version retains all levels.

3. The game music is different: the music of the American version of "Teenage Mutant Ninja Turtles 2" and the Japanese version of "Teenage Mutant Ninja Turtles 2" are also different. The music of the American version is more exciting, while the Japanese version is more Bright and cheerful.

4. The game character voices are different: the character voices of the American version of "Teenage Mutant Ninja Turtles 2" and the Japanese version of "Teenage Mutant Ninja Turtles 2" are also different. The character voices of the American version are more humorous, while the Japanese version of "Teenage Mutant Ninja Turtles 2" has different voices. The version is more formal and serious.