... under windows 10. The review by adrianwong81 helped, but got me a little confused at first, because the site (s)he linked to did not contain ddraw.dll. If you go here https://github.com/narzoul/DDrawCompat/releases you'll find it under ddraw.zip (unless that site changes). Apparently you need to use the 0.2.0 version. What I did was: Extract ddraw.dll from ddraw.zip into the directory that contains deadlock.exe. Have deadlock.exe run in windows 8 compability. Hope that works for you too.