Three Karatekas are fighting on the same screen (and the same backdrop), in order to proceed in gaining belts. After gaining some points there are frequently two bonus games where you must either kick bombs away (before they explode) or you can deflect fireballs holding a shield. A second player can join the game as well and the third can be controlled by the CPU. The first of the three players to score six points is the winner, and is awarded extra points for every second left. The player with the lowest score at the end of the round is out of the game.
One of the most impressive aspects of this game is that, punches and kicks are fast and furious, I mean really fast! There are twelve attacking moves and a handful of defensive procedures at your disposal here. All of the original International Karate title are offered here, plus a lot more, such as reverse face kick, double head kick (for hitting both fighters) end so on. IK+ was one of the best and more fun to play karate games during the 16bits home computers era. Win points, get the highest belt and be the new master.
IK+ is everything a fighting game should be. It is vicious, spectacular, loud and great looking!
The graphics are cute and the character animation is nice and smooth. Although the background detail does not change, there is a wonderful animated sunset near a temple (the sun's ripples reflect in the sea as it laps the shore). There a few short animation found at the background too (birds flying, leafs falling from a tree, fish jumping! etc). Note that the overall visuals are identical between the Amiga Atari ST here, although the Amiga version uses more colors on screen 9actually double the amount).
Sprites move really fast and very smooth being also greatly animated. What is really impressive here, are the sounds FX which were produced using high-quality digitized samples from karate/fighting movies and Bruce Lee-style cries. More on that, the Amiga version features a great main menu music in 4-channels stereo, composed by Dave Lowe and performed several years later at the Symphonic Game Music Concert III in 2005 as well! The game was voted Best 16-bit Soundtrack of the Year at the Golden Joystick Awards!