Hello Neighbor: Nicky's Diaries is the ultimate Hello Neighbor game built from the ground up for mobile devices. Some say he's a killer, that he hides kidnapped children in his basement. All you know is he's your Neighbor, and it's up to you to figure out what he's hiding.

Taking place in the book timeline, the game follows the story of a now-grownup Nicky Roth, who, following his triumph over The Thing, finds his old stuff in his old bedroom. Remembering his childhood, Nicky wonders on what actually happened in his past, and remembers the good times with Aaron Peterson.