Living like in 18-19th Century in Europe, the player will role-play as a teenage girl from aristocratic stratum during the game. He/she will finish levels of puzzle elimination, make different kinds of friends and know their stories, and create their own stories with attractive gentlemen. Given the Rococo style as the main artistic style, Ola’s Diary combined the elegance, delicacy, and magnificence with pop-up book design, which creates a vintage and prosperous world.