Only worth playing for the story, the gacha rates are abysmal and gameplay is mindnumbing. Even after 5 years (including JP), the game is still unfriendly to new players, requiring at least 1 year of constant play to have a decent pool of leveled servants and skills. Anyone saying this game is f2p friendly is telling a half truth, sure you can beat the game with 3* servants but the entire appeal of a gacha game is playing with your favourite characters, and most popular characters are 4/5*s. Gacha games in general are inherently bad because of design and monetisation, expecting you to treat it like a second job. I'm only still playing because of sunken cost, see image for reference.

[insert screeching fgotard about how amazing this game is - even Nasu wants to move on and make actual games]