Twelve Floors Below.

Leaves a lot for the imagination which is a good thing, the game's almost like reading a creepypasta.

Its claustrophobic and the story is engaging and fair-paced. The voice acting is descriptive and evokes stress when you do something the speaker in the elevator tells you not to. The one on floor -12 conveys regret of her actions, but is compelled to do what she does to survive. The ending on Floor -10 up the stairs is ambiguous but could be the good ending for you. Some camera bugs where the view spazzes like a frame skip. Walking up the stairs made me float forwards when I stopped at the top before gravity remembered to do its job. Pressing the stop button in the elevator too many times caused it to malfunction and can't continue downwards even after pressing the down button. Verdict: Good story-driven short game. Endings are easy to understand. No loose ends.