What video game "engine" was used to make this video game?

how do i fix the window dog he walks up and does nothing

Chapter 5, in the backyard. After blacking out from the neighbors dog, the moment the next objective displays, game crashes. Crash is gate keeping me from progressing.

I was hyperfixated on this game in 2022 when it first came out, I was never able to get the game because of money and because my pc wouldnt been able to hadle it anyways, I heard of mulitple endings and a muesum so i searched it up, There wasn't anything that gave me the anwsers so i want to see if any of the players here know any of the endings other than dying in the middle of street (the only one i've ever seen)...

I got an objective to find water, but I really can't find anything the dog could drink, I even ran back to the owner's house to check the toilet, but it didn't let me drink. Where am I supposed to find water?