Mabinogi

While a bold claim, and not to say that other games aren't better than Mabinogi, Mabinogi has everything I want in a game at my disposal: an open-class system, a vast amount of customization, a decent story with interesting characters and lore, and I can play casually.

Combat system Is complex and strategic, with MANY skills to choose from, you can even mix "skill classes" such as melee with supplemental magic attacks An interesting story and lore with several hundred of hours of quests (not including non-story questing).

The game runs on a potato, has a good story early on, and has one of the best class systems I've seen in an MMO.

if you do play this game, you'll be satisfied with the unique, strategic, try-not-to-get-hit action combat, the overall character customization, the loyal, helpful, and wholesome community, the fresh yet nostalgic and classic anime visuals that's been lost to modern cel-shaded anime games, and the curious freedom of progression to do whatever you want in the game your way.

Not to mention involving yourself with a group or groups of friends to go do missions dungeons or just talk is always fun.