HuniePop vs Tartaros Rebirth
HuniePop
HuniePop is a rather different adult "dating" simulation game containing some forms of hentai (again, NSFW!). Its gameplay is partly RPG where you get to interact with the hot anime girls in the game through messages, some of which can be pretty hilarious. The other part of the game is filled with entertaining match-3 puzzles that are surprisingly challenging - you need to play these puzzles to increase your affection level with the anime ladies in the game. The last part of the game is its dating sim aspect, where you need to buy gifts and send them to the correct girl who will like the said gift. Build up your affection level and you might be able to get them to accept you as their boyfriend.Interestingly, the game even allows you to customize the appearance of the eight girls (each with different personalities) that you can date and unlock more varieties of outfits and hairstyles. And of course, being an adult game, you can expect some pretty steamy scenes involving these anime babes.
HuniePop is also featured in a visual novel-style which will appeal to most anime-loving guys. So, if you're into anime girls, this might be a game that'll interest you.
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.