One Hour Or Less
Everything i can recall finishing within the hour.
Time is of course relative.
Alternatively can be used as recommendations for short and sweet experiences. Since I'm also generally positive about most titles here.
70 Games
Except you!
You can reach like 3-4 endings in that time.
Far as i can tell, there isn't any differences between this, and the full release's prologue. So if you already intend to play it skip this, because progress here doesn't transfer into the full game.
This literally only took me 6 minutes
Except you!