The two karatekas are fighting in order to proceed in gaining belts. The game is a classic martial arts fighting game in which you compete in a series of one-on-one karate matches. The game offers up to 10 different movements, including jumping kick, roundhouse kick and a variety of punches and kicks, high and low. Controls can be either using Joystick or Keyboard for each player. Typically, in each fight you must bring the opponent's health bar to zero before the own health runs out whilst there is a timer and when this goes to zero, the fighter with the better health left wins only. Opponent's difficulty gets higher as you progress to the next stages. Also between fights you engage in a bonus game in which you brake a surface of several bricks. Click as fast as possible the fire-button, n order to brake as many as possible and gain extra points.
Sensei does offer a lot of fun much like the International Karate game series by System 3 and the like. Controls are pretty smooth and responsive and the games' difficulty is smoothly (and fairly) increasing as you progress.
Graphics are cute and colorful with some oriental-style backdrops. Note that each screen offer 60 to 100 colors! The character animation is nice and smooth too.
What is really impressive here is the sound, which offers a great example of stereo music particularly in the intro scene where it plays drums from alternate speakers! There are also several sampled SFX along with some high quality speech during gameplay.