[DirectX October 2006 Documentation] Space Combat (81.6176470588235%)

DirectX Input > DirectInput > Reference > Action Mapping Constants > Flight Genres

[DirectX 6 Programmer's Reference] Space Donuts Sample (26.2534399724802%)

DirectX Foundation > DirectDraw > DirectDraw Samples

[DirectX 7 Programmer's Reference] Space Donuts Sample (23.4114698510983%)

Microsoft DirectX 7.0 > DirectDraw > DirectDraw Tools and Samples > DirectDraw C/C++ Samples