Works perfectly on Windows 10 (November 2019 update). Interface is not simple, however it gives you ultimate control like Amphetamine for Mac.
I think this is pretty full featured but the creator's english hampers some the labelling of options and the user help on their website. I gave up and got Caffeinated as I only needed something pretty basic.
[Edited by testmonkeyy, March 07]
Our users have written 2 comments and reviews about Don't Sleep, and it has gotten 15 likes