TRIP:Steam Edition (Steam key).

http://store.steampowered.com/app/341540/
TRIP is a self-described "artware"

A 3D art platform to be periodically updated with virtual art installations
( 3D explorable art sets )
These virtual sets will feature works and music by the artist
as a theme, aesthetic, or idea solidified in 3D form and fully explorable.

TRIP is for those looking for an artistic and abstract experience without the demand for an objective.

Here are some screens from the upcoming content batch