Two multiplayer spin-offs, Secret Neighbor and Hello Engineer, were released in October 2019 and October 2021, respectively.

The game spawned a franchise, beginning with a prequel, Hello Neighbor: Hide and Seek, released in December 2018. Critics panned the gameplay, control scheme, and technical performance, although some praised the story, mystery elements, and art style. While the initial alpha versions of Hello Neighbor were received positively, the final product was met with largely negative reviews. The game's artificial intelligence (AI) modifies the neighbor's behavior based on the player's past actions, such as setting traps along paths the player followed in a previous attempt. Their goal is to successfully sneak into the basement of the neighbor's house to uncover a dark secret while avoiding being caught by him. In the game, players play as a citizen, who just moved into the neighborhood, and try to break into their neighbor's house. Initially released as public alphas from 2016 to 2017, it received a full release for Windows and Xbox One on December 8, 2017, and later for PlayStation 4, Nintendo Switch, iOS and Android on July 26, 2018. Hello Neighbor is a survival horror stealth game developed by Russian studio Dynamic Pixels and published by tinyBuild.

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