The main usefulness of DxWnd is found when dealing with video games developed mainly for Windows 95 and 98. As a general rule, these tend to monopolize all the resources and devices of the computer, even though they're not actually using even 5% of the power of a modern PC. If you try to play games from this era, you'll notice that you can't perform other tasks while playing and, sometimes, you can't even minimize the screen.
By using DxWnd you'll be able to run these old games (or programs) directly in a window, without suffering the inconveniences mentioned above. The list of supported titles is extensive and, in general, it should work correctly with almost any video game you try, although it's not guaranteed to work perfectly with all of them. Even so, all the great classics work perfectly.
DxWnd is practically a must-have program for modern gamers, who want to continue enjoying some of the great gems of the 90s and early 2000s. It's a lightweight and easy-to-configure program that will save you a lot of headaches.