One Piece Online vs Tartaros Rebirth
One Piece Online
One Piece Online is an anime MMORPG based on one of the world's most well-liked anime series that you can play on your web browser. Join Luffy and his gang of misfits as one of three different classes to fight against relentless bounty hunters, rowdy (and likely drunk) pirates and rivals from the opposing faction (either the Strong World or the Worst Generation depending on which faction you decide to side with). Experience an exciting adventure as you complete various quests and battles via the game's immensely helpful automated systems or challenge other fellow pirates for a not-so-friendly duel. If you enjoy idle browser RPGs and One Piece, then One Piece Online is our recommended game to you. Do give it a try!Tartaros Rebirth
Tartaros Rebirth is the revived version of the anime-themed MMORPG that was popular back in the 2000s, Tartaros Online. Featuring everything you know and love from back in the day, this game has something new to offer as well, such as brand-new storylines. Like the original, you'll get to play as one of nine unique characters, each with their own personalities and skillsets. You can switch between them while you're in town, but not in dungeons or instances. Questing is the main way to level up in this game and the grind is real. However, there are tons of places for you to explore and you can even use higher level characters to complete quests for your lower level characters to turn in.The combat system is rather clunky though, so is its controls with keys that you'll probably have to rebind. Battles are played out in a semi-action-based manner, but since you can't really dodge, block or dash away from danger, all the "non-action" can be a bit underwhelming. Not to mention, the graphics isn't updated somehow and although it may have been acceptable back then, it is definitely not something that will appeal to players in this day and age.
So, in short, Tartaros Rebirth is a great anime-themed game to play, despite sharing many similarities with Dragon Nest, for nostalgic purposes but if you're simply looking for a new anime game to play, you might have a better time playing Lineage II: Revolution.