When you start up
Corpse Party, you are given the options of five different chapters plus Extra, Victims, and Configuration. The game will let you choose to play the chapters in any order if you want, but it might be a bit confusing and possibly spoil an earlier chapter if you skip one. I am not sure if that will affect you getting the best possible endings if you play out of order.
Corpse Party has multiple endings based on the choices that you make throughout the game. I would definitely recommend Chapter One first, just so you have a clue as to what is going on.
As an old legend goes, the ghost of a teacher haunts the site that used to be Heavenly Host Elementary School. Now, a new school, Kisaragi Academy, sits on the site but the teacher still haunts it, sending kids home at 7 PM. One night a group of students are there late cleaning up. Ayumi Shinozaki, Naomi Nakashima, Yoshiku Kishinuma, Seiko Shinohara, Satoshi Mochida, Mayu, and Morishige are all still in Kisaragi Academy when the lights go out right at 7 PM. They hear a ghostly knocking in the corridor, but it’s only their teacher Ms. Yui Shishido playing a trick on them. She has escorted Satoshi’s younger sister Yuka, who is there to bring Satoshi his umbrella. Since they’re all there together, the nine of them decide to do a little ritual that will bind them together as friends forever. After the ritual, it appears everything is fine, but suddenly a massive earthquake strikes.
Earthquakes are common in the area, but what’s quite unusual is that after the earthquake, Naomi and Seiko are the only two left in the room. Plus, they are no longer in their school. Instead they find they have woken up in Heavenly Host Elementary, with no visible way out. To make matters even worse, Naomi has a sprained ankle. Throughout all of Chapter One, you will be playing with Naomi and Seiko. Each chapter, you will play with different kids that were pulled into these hell dimensions.
When you first start up the game, you’ll find that there is nothing you can choose under Extra. You will have to beat a chapter to unlock the extra that goes with it. These chapters deal with some of the previous students that have been stuck there. They are much shorter, but like the main chapters, they have quite a number of wrong endings, so you’ll have to try a few times to get the right one. If you choose Victims from the Main Menu, you will be able to browse through all the name tags you have collected from the dead bodies. Finally, Configuration will let you adjust the game’s settings. This is where you can make the game window larger or even set it into full screen mode if you want. You can also adjust the various volumes here.