Night Attack On Little Sis! Free Download (v1.13) May 2026

While specific version 1.13 patch notes are not detailed in official mainstream logs, the game is frequently updated on indie platforms like itch.io.

: The primary goal is to complete various "lustful actions" while the target is asleep, carefully managing movement to avoid waking them or being discovered. Night Attack on Little Sis! Free Download (v1.13)

(also known as Sleeptime Fun! ) is an indie stealth-based simulation game. Players take on the role of a character using ninjutsu training to sneak into a bedroom to perform various actions without being caught. Key Game Information Developers : Rayn and Namida. Genre : Simulation and stealth. Platform : Primarily available for PC. While specific version 1

: You must utilize ninja-themed skills to remain undetected. Night Attack on Little Sis! Free Download (v1.13)