Is PTK as advanced as Doom III or Unreal Tournament 2 engines? PTK is a mostly a 2D engine so it can't be compared to a 3D engine. you can check some games made with PTK on http://www.phelios.com
Do I have to place a PTK logo in the games i make? No, but we do appreciate it.
What version of Direct 3D does it use ? Direct 3D7.or higher.