#5763
dgVoodoo is a legacy DirectX and Glide graphics card API wrapper/implementation program. It implements Glide API by using DirectX or converts old DirectX APIs to Direct3D 11/12 for use on Windows 7 and newer versions. In other words, it provides support to run Windows- and DOS-based old programs using Glide or DirectX API.

#1021
If you want to run games in window-mode, i will recommend you a must-have tool - DxWnd, which can make full-screen programs run within a window, especially useful for windows games.