As a bit of a forewarning, this was a project I had finished as a sort of "permanent prototype" in 2014 and posted to itch.io about a month ago. I've circulated it a bit back when I first completed it but recently have been trying to put it out there more earnestly. The graphics are just about the lowest that a 3D game can reach, but in any case it is in fact a full and complete game with multiple paths and endings.
Oneiro is a 1st person 3D action-adventure game in which the player travels through a surreal and sometimes disquieting dream world. The player's goal is to escape back into reality, exploring, solving puzzles, and sometimes fighting their way through the dream in the process. Each level corresponds to a different section of the dreamscape which varies greatly in terms of content.
You can download the game from my itch.io page at https://fyndr.itch.io/oneiro