International Karate Plus Game System: Commodore C-64 Cheat Category: Cheat Game Company: Unknown Game Category: Unknown Hint, Cheat, Walkthrough:   International Karate+ ===================== The asterisk key '*' changes the sun's reflection in the water. Press D+E+M+O to change the colour of the water and the sky. If you're knocked down - pause the game (SHIFT/LOCK) and restart it again (any key) and you'll be standing up. The keys 1 to 5 changes the game speed from fastest to slowest.