Opening Files of a Game Made in Gamestudio

So i bought a game(developed in gamestudio) recently but i dont have some of the effects and all of the cutscenes. The game is not really good. But i really want to see the full game and talk about it on youtube. So how can i open the files and take a look at the cutscenes?

Note: The game is Kabus 22 all the files' extensions are K22

Edit: Sorry i couldnt find the correct place to post my problem.