If there's still room: Omori(real world only) vs Hello Neighbor(real world only). The connections being (SPOILERS) that they are two games that revolve around attempting to uncover the mystery of what happened to a major character's family. Both games had a brother whom accidentally murdered his sister by pushing her off a high place after events that changed their lives occurred (Sunny pushing Mari down the stairs in rage after breaking his violin and Aaron pushing Mya off the house after the death of their mother). Both games also incorporated imagination (Headspace and Nicky's dreams/ the kids' hide and seek games) and trauma in the form of scary creatures (Something and The Thing). It's also, despite Omori MUs mostly using the headspace side of it, pretty debatable.
