No revenue estimate for PSN — its rating/review counts don't calibrate to sales the way Steam's do. The Steam version is estimated at $5.2K — a different platform, not this one.

Murder on the Marine Express

A mystery visual novel taking place aboard the underwater train the Marine Express. Follow student Ranko Togawa on her quest to track down the culprit as she searches for clues, questions the other students and undercovers evidence. The St. Joachim Academy for elite girls booked the maiden voyage of the new Marine Express submarine train, which runs along the ocean floor from California all the way to the Japanese coast. The journey seems like the perfect opportunity to enjoy the beautiful underwater scenery, learn about marine biology and, ultimately, relax from regular school life. However, the idyllic travel turns into a nightmare when one of the teachers is found dead in his room. Who could have killed the most popular and beloved professor in the academy? Ranko Togawa, accompanied by her friend Astrid, takes it upon herself to investigate the events and clear the name of the main suspect. Of course, it won't be that simple. As the number of victims grows, the possibility of faci