As someone who's played the game and knows what happens in the story, this anime does it justice. Like the divorce act they did for Itaru. They added new scenes which made it interesting and it's always fun to try to spot future Mankai members. The plot is interesting as it's the classic save the place from being shut down. Normally in movies it's a camp or a school, this time a theater. The characters are really interesting and for being a big group I love that the interact with each other instead of one specific group. They make you want to know more about their backstory that even the game has yet to reveal.
Also, I recommend playing the game. You do get spoiled but also learn about scenes in that anime being different from the game as well as one cut out. The game is translated in english so anyone can play!