Mabinogi was a very fun game to play. Most compare it to Runescape, and the reason why is pretty obvious. As there are many features in-game, you will be faced with a pretty large learning curve, though pay no mind as you will learn with the various guides and references they offer. The style is very anime-like however, so if you do not enjoy that, this is definitely not the game for you. This game is user friendly for the complex gamers and the simplistic ones, hardcore gamers, casual gamers.
You make the fun out of the game on your own. It really is a great concept. Nexon still has to master it, although I think the future is bright for this game (especially when they release a new playable race). The biggest downfall this game has is most definitely its item shop. You are almost required to pay up if you want to get strong within the game, and that is taking it a little too far. It is quite literally "hidden p2p". If you can access the premium items, or have a lot of time on your hands, this is a great game choice for you. There are so many things to do; you will never find yourself in boredom while playing the game. The community is actually pretty great. There is the average mix of immature and mature players, but everyone seems to get along. So check it out, and happy gaming!