Pokémon Duel vs Tartaros Rebirth
Pokémon Duel
Pokémon Duel is one of the few mobile spin-offs that deviate rather far from the conventional Pokemon games. Featuring a strategic gameplay that's based on the popular Pokemon Trading Figure Game in Japan, you'll get to actually battle other Pokemon trainers by placing your Pokemon figures on a board. The player who managed to reach their opponent's base tile will win the game.As you might have expect of any Pokemon-themed games, you'll get to collect beautiful (but digital) Pokemon figurines from across all Pokemon generations, assemble your lineup of figurines, much like building a deck, and attempt to defeat as many Pokemon trainers as you can on your quest to become the best Pokemon trainer.
Pokemon Duel is the perfect game for players who are looking for a free-to-play Pokemon game that actually let you duel - not like the tap-fest that Pokemon Go uses. Fans of the Pokemon Trading Figure Game might find this game very entertaining as well since it's very similar to the game they love.
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.