Pretty much the only viable platform for online riichi mahjong for english speakers, (besides trying to figure out tenhou with a guide). Good amount of players, I can pretty much always find a game within a couple minutes. No major glitches, at least from the few months I played. And the presentation is reasonably shiny for a mahjong client. The gacha is incredibly superfluous, and not really implemented well to the gameplay in my opinion. The character designs are okay, though the voice acting's not bad for the few lines the characters speak during a game. Also the quests and events feel incredibly same-y and all kinda blend together, all adding up to a feeling like the extra features just don't really matter at all in the end.

As a way to play mahjong online, it's perfectly quality, though. Probably your best option right now, honestly.