Spooky greets the player in the first room, "Room 0"; her cute appearance and humorous dialogue may lead the player to believe that this is going to be a simple game to poke fun at other horror game clichés. In the first 50 rooms, no monsters or death traps appear, and the only scares are Specimen 1. This may cause the player to completely drop their guard and expect a harmless parody. The first and only indicator that things are not as they seem are notes that appear randomly on Specimen 1 and furniture. These are from another person who entered the house. Once the player reaches Room 50, which is an elevator, they are rewarded with a save point before pressing the button and continuing to the next floor. This is where things begin to change.
In this section, things start to change, as dark maze-like rooms surrounded by abysses begin to appear, as well as out of place objects such as the Brainframe. However, the real scares don't begin until the player reaches Room 60, a large room with a mysterious black and green puddle in the center and a note on a table that reads "Spouting, Splashing, Soaking. Innards, Ingest, Invoking. Nailing, Never, stops the Choking" in a suspicious red text.
Once the player puts the note down a loud choking sound is heard; this is the indicator that Specimen 2, the first hostile enemy in the game, has appeared. It must be avoided at all costs. The player is then chased by Specimen 2 through several rooms, which, by the specimen, have black and green puddles on the floor created to slow the player down and increase the chances of getting caught. The rooms continue as normal until Room 100, which is yet another save room/elevator.