Each scene is triggered at most twice, limiting the play of the page. In the "Ruined Library" game, you need to remove pages to upgrade the system. Because players need a lot of upgrades, the game sets a limit, that is, each scene can be triggered at most twice to limit the play of the page. "Ruins Library" is a simulated strategy game, in which the player plays the role of librarian to welcome the guests who come here.