(e.g., Puzzles or Multi-Path Levels):

At exactly 10:00 PM, you will hear a single knock on your bedroom door. If you speak or open the door, she instantly rushes you (game over).

There are two vents: one in the ceiling (above the bookshelf) and one low on the south wall. Use 1 Wooden Plank per vent. Nail them in (right-click). Pro tip: If you skip this, she will enter silently by 2:00 AM.

Remember: She is not trying to kill you (in most versions) – she is trying to scare you into making a mistake. Stay calm, conserve your flashlight, and rotate your hiding spots. Complete this walkthrough perfectly, and you'll see the 6:00 AM sunrise cutscene where Little Sis is back to being a normal, annoying sibling.

: Pay close attention to the "Awareness" or "Sleep" bar at the top of the screen. If it fills up, the sister wakes up and it is Game Over. Interaction Sequence Stage 1 (Light Sleep)