i am doing a mastermind game using a genetic algorithm for a AI project. i do understand the concept of the algorithm and how it works but when i code the game, it's quite complicated than i thought. Please, anybody who can give me the link of example code of Mastermind game. :P

Just doing a quick google I found this, but since you didn't post what language/API you're using I'm not sure it will help much.

Just [google] for "mastermind game programming code +AI" and browse the results for what you want.

What, exactly, are you having trouble with?