Kal-Online is a good free multiplayer game. However, it is facing problems and could use more updates and improvements.
Kal-Online is currently facing many issues. Some of these issues include CCF(Credit Card Fraud). Other times, players have been able to "hack" into the game and make themselves run faster, receive free items, and various other things unacceptable.
Overall, Kal-Online is a great and fantastic game which everyone who is interested in Role-Playing games should try. It is very difficult to begin the game all by yourself, especially if you do not have anyone or any friends to help you on it, but it gets much better, and is extremely fun. In my opinion, it is one of the best free games out there right now.