If you install a mod menu from a 2021 archive onto the latest Steam version (2024/2025), you will likely crash on startup. Here is why:

Disclaimer: This is for educational archival purposes. Modifying game files violates the EULA for many versions.

If you had a legitimate, safe DLL file for version 1.7 in 2021, the process was:

A warning for 2025 readers: These methods rarely work on the current version of the game due to DRM updates.

Since the game’s difficulty scaled with how scared Mr. Peterson was (the red haze effect), 2021 mod menus often included a slider to set Fear to zero, effectively making the Neighbor blind and deaf.