Overview
Warning: This guide contains spoilers!
What happened
Hide and seek:
This is the prequel of hello neighbor, you play as the neighbor’s daughter… and do fetch quests-ish
One of the cutscenes links up to the original game too, aka the wife dying. This links up to act 1 of the first game where the neighbor goes off driving with his wife, leaving the children on their own. Then the car crashes and the wife dies.
Then, if that could be any worse, the daughter is pushed off the house by her brother during construction.
Hello neighbor:
in act 1 you hear a child being locked in the neighbor’s basement, who is it? The son. but before that The neighbor put up missing posters to trick the police, as he doesn’t want to lose his son, too. That’s why the neighbor is trying to stop you from getting into the basement.
At the end of the finale act you beat “the thing” but then it goes after the neighbor, trapping him inside a two room house.
Secret neighbor:
“The thing” has managed to possess the neighbor, making him go after random children.
And that’s why if you kill the neighbor “the thing” shows up.
Theory: “The thing” could actually be the player, as right after you are set free you lose control of the “player”