Most people agree that it's about 6-7 hours long currently.
All the other info is here:
https://boosty.to/woregames
I just bought the game on hipolink for 10 dollars. Unfortunately I saw too late that it only says version 0.2.9.5 at the top ;( and I didn't get a confirmation or a link with the password even after processing with Paypal. What can I do? ( the site say in russian that it is processed. That was some time ago and nothing has changed)