International Karate is a simulation of a Karate Tournament where two people can play against each other or one can compete against the computer.
During the game, you will fly around the world to various locations and in two-player game there is also a special bonus round.
Each round consists of three 30 seconds bouts. The first player to score two full points wins the bout, and the first to achieve victory in two bouts wins the round.
In a two-player game, the victor in each bout then goes on to the special bonus stage which involves dodging a flying weapon. Success in this part of the game will earn you 500 points.
The winner of each round scores an extra 2000 points and the next destination is then automatically on screen.
When competing against the computer, you must win in each round in order to carry on to the next destination.