The game had relaunched. The Neighbor was back in his living room, frozen again, holding a broom. The green text returned, cheerful and clinical.

Beta 3 introduced specific developer countermeasures that trainers must bypass: Detection Symptoms

Since Beta 3 is an obsolete build (pre-1.0), official trainer support has been discontinued on platforms like WeMod. However, archived copies can still be found on:

Despite the anti-trainer defense, a fully functional trainer for Beta 3, created by a user named , became widely available. This is the most referenced and downloaded trainer for this specific version of the game. Posted on various modding websites in late August 2017, it weighs in at 4.09 MB and has accumulated tens of thousands of downloads. Its features and corresponding hotkeys are:

Since the main distribution pages are over six years old, finding the file requires searching for it on modding archives like Mod DB or Archive.org. The original file name is often Hello Neighbor Beta 3.rar or similar.

This allows the player to move through walls, floors, and ceilings. It’s perfect for exploring the map, reaching areas that are not intended to be accessed, or finding hidden developer secrets. 3. Size Modification (Small/Big)

The trainer often affects items in your hand, making them gigantic as well, which can be used to block the Neighbor’s path or break through barriers. 2. Freeze Neighbor (AI Control)