A year ago I uploaded a video showcasing a game mechanic that involved reversing gravity. Since then, I've rewritten and greatly expanded upon that game's codebase.
The mechanics shown are the culmination of about 3 months of on-and-off work. I haven't decided on a name for this game yet, although for now I've just been referring to the project as "GravVR". The visual style isn't anywhere near completion, and the level design in this video is only meant to showcase the game mechanics.